Entity Central Index Key Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Sales rebates and discounts. Contribution receivable from former parent. Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Restricted cash Restricted Cash And Cash Equivalents Short-term investments Short Term Investments Accounts receivable Accounts Receivable Net Current Inventories Inventory Net Current assets held for sale Assets Of Disposal Group Including Discontinued Operation Current Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net Property Plant And Equipment Net Intangible assets, net Finite Lived Intangible Assets Net Long-term assets held for sale Disposal Group Including Discontinued Operation Assets Noncurrent Other long-term assets Other Assets Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Accounts payable and other accrued liabilities Accounts Payable And Other Accrued Liabilities Current Accrued compensation Employee Related Liabilities Current Sales rebates and discounts Sales Rebates And Discounts Due to acquirer of discontinued operations Disposal Group Including Discontinued Operation Accounts Payable And Accrued Liabilities Deferred revenue, current portion Deferred Revenue Current Other short-term liabilities Other Liabilities Current Current liabilities held for sale Liabilities Of Disposal Group Including Discontinued Operation Current Total current liabilities Liabilities Current Deferred revenue, net of current portion Deferred Revenue Noncurrent Long-term debt, net Long Term Debt Noncurrent Other liabilities Other Liabilities Noncurrent Total liabilities Liabilities Stockholders' equity: Stockholders Equity [Abstract] Preferred stock: $0.001 par value; 15,000,000 shares authorized, zero shares issued or outstanding Preferred Stock Value Common stock: $0.001 par value; 500,000,000 shares authorized; 21,426,731 and 20,271,737 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Contribution receivable from former parent Contribution Receivable From Former Parent Accumulated deficit Retained Earnings Accumulated Deficit Total stockholders' equity Stockholders Equity Total liabilities and stockholders' equity Liabilities And Stockholders Equity Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, shares issued Preferred Stock Shares Issued Preferred stock, shares outstanding Preferred Stock Shares Outstanding Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares authorized Common Stock Shares Authorized Common stock, shares issued Common Stock Shares Issued Common stock, shares outstanding Common Stock Shares Outstanding Collaborations revenue. Consolidated statements of operations and comprehensive loss. Consolidated Statements Of Operations And Comprehensive Loss [Abstract] Revenues: Sales Revenue Net [Abstract] Product sales Sales Revenue Goods Net Collaborations Collaborations Revenue Total revenues Sales Revenue Net Costs and expenses: Costs And Expenses [Abstract] Cost of product sales Cost Of Goods Sold Research and development Research And Development Expense Selling, general and administrative Selling General And Administrative Expense Impairment of goodwill and intangible assets Asset Impairment Charges Loss from operations Operating Income Loss Other income (expense): Other Nonoperating Income Expense [Abstract] Other expense, net Other Nonoperating Income Expense Total other expense, net Nonoperating Income Expense Loss before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Benefit from income taxes Income Tax Expense Benefit Net income (loss) from continuing operations Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest Discontinued operations (Note 2): Income Loss From Discontinued Operations Net Of Tax [Abstract] Income from discontinued operations, before income taxes Discontinued Operation Income Loss From Discontinued Operation Before Income Tax Income tax expense Discontinued Operation Tax Effect Of Discontinued Operation Income from discontinued operations Income Loss From Discontinued Operations Net Of Tax Net income (loss) Net Income Loss Basic net income (loss) per share: Earnings Per Share Basic [Abstract] Net loss from continuing operations Income Loss From Continuing Operations Per Basic Share Net income from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Basic Share Net income (loss) Earnings Per Share Basic Weighted-average shares used to compute per share calculation Weighted Average Number Of Shares Outstanding Basic Diluted net income (loss) per share: Earnings Per Share Diluted [Abstract] Net loss from continuing operations Income Loss From Continuing Operations Per Diluted Share Net income from discontinued operations Income Loss From Discontinued Operations Net Of Tax Per Diluted Share Net income (loss) Earnings Per Share Diluted Weighted-average shares used to compute per share calculation Weighted Average Number Of Diluted Shares Outstanding Statement Of Income And Comprehensive Income [Abstract] Net income (loss) Other comprehensive loss: Other Comprehensive Income Loss Net Of Tax Attributable To Parent [Abstract] Unrealized losses on available-for-sale investments, net Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Total comprehensive income (loss) Comprehensive Income Net Of Tax Impairment of goodwill and intangible assets. Increase decrease in assets and liabilities held for sale. Increase Decrease in Due to Counterparty. Increase (decrease) in sales rebates and discounts. Settlement of contribution receivable from former parent Payments for taxes related to net share settlement of equity awards. Statement Of Cash Flows [Abstract] Operating Activities Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Stock-based compensation Share Based Compensation Depreciation and amortization Depreciation Depletion And Amortization Gain on sale of Hyperimmune Business Disposal Group Not Discontinued Operation Gain Loss On Disposal Impairment of goodwill and intangible assets Impairment Of Goodwill And I Itangible Assets Income taxes Deferred Income Taxes And Tax Credits Change in fair value of contingent consideration Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 Changes in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Accounts receivable Increase Decrease In Accounts Receivable Inventories Increase Decrease In Inventories Income taxes Increase Decrease In Income Taxes Prepaid expenses and other current assets Increase Decrease In Prepaid Deferred Expense And Other Assets Accounts payable, accrued compensation and other liabilities Increase Decrease In Other Accounts Payable And Accrued Liabilities Change in assets and liabilities held for sale Increase Decrease In Assets And Liabilities Held For Sale Due to Soal Increase Decrease In Due To Counterparty Sales rebates and discounts Increase Decrease In Sales Rebates And Discounts Deferred revenue Increase Decrease In Deferred Revenue Net cash used in operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Investing Activities Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Cash proceeds from sale of Hyperimmune Business Proceeds From Divestiture Of Businesses Proceeds from the maturity of investments Proceeds From Sale Maturity And Collections Of Investments Purchases of property and equipment Payments To Acquire Property Plant And Equipment Purchases of investments Payments To Acquire Investments Net cash provided by (used in) investing activities Net Cash Provided By Used In Investing Activities Continuing Operations Financing Activities Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Transfer from former parent, prior to spin-off Proceeds From Contributions From Parent Settlement of contribution receivable from former parent Settlement Of Contribution Receivable From Former Parent Proceeds from long-term debt, net of issuance costs Proceeds From Issuance Of Long Term Debt Debt issuance costs Payments Of Debt Issuance Costs Proceeds from the exercise of stock options Proceeds From Stock Options Exercised Payments for taxes related to net share settlement of equity awards Payments For Taxes Related To Net Share Settlement Of Equity Awards Restricted cash Proceeds From Repayments Of Restricted Cash Financing Activities Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Increase cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Accounting Policies [Abstract] Nature of Business and Significant Accounting Policies Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Text Block] Discontinued Operations And Disposal Groups [Abstract] Sale of Hyperimmune Business Disposal Groups Including Discontinued Operations Disclosure [Text Block] Organization Consolidation And Presentation Of Financial Statements [Abstract] Collaboration Agreement Collaborative Arrangement Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Investments Debt And Equity Securities [Abstract] Investments Investment [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Earnings Per Share [Abstract] Net Income (Loss) Per Share Earnings Per Share [Text Block] Equity [Abstract] Equity Shareholders Equity And Share Based Payments [Text Block] Accounting Changes And Error Corrections [Abstract] Restatement Accounting Changes And Error Corrections [Text Block] Use of Estimates Use Of Estimates Accounts Receivable Receivables Policy [Text Block] Revenue Recognition Revenue Recognition Policy [Text Block] Income Taxes Income Tax Policy [Text Block] Recent Accounting Pronouncements New Accounting Pronouncements Policy Policy [Text Block] Summary of net gain on sale of business. Summary of Gain on Sale Summary Of Net Gain On Sale Of Business Table [Text Block] Summary of Reconciliation of Carrying Amounts of Assets and Liabilities of Hyperimmune Assets Held For Sale, Net in Unaudited Condensed Consolidated Balance Sheet and Components Attributable to Hyperimmune Business Presented as Income from Discontinued Operations in Unaudited Condensed Consolidated Statements of Operations Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures [Text Block] Summary of Financial Assets Measured at Fair Value Fair Value Assets Measured On Recurring And Nonrecurring Basis Table [Text Block] Schedule of short-term investments Available For Sale Securities [Text Block] Schedule of Inventories Schedule Of Inventory Current Table [Text Block] Computation of Basic and Diluted Net Income (Loss) per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Summary of Potentially Dilutive Shares Excluded from Calculation of Net Loss Per Share Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Summary of Stock-based Compensation Expense Includes Amortization of Stock Options and Restricted Stock Units Granted Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Assumptions used in Valuing the Stock Options Granted under Black-Scholes Valuation Model Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Summary of Stock Option Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Summary of RSU Activity Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] Impact of Restatement on Consolidated Statements of Operations Includes Impact of Discontinued Operations for Periods Affected Schedule Of Error Corrections And Prior Period Adjustments [Text Block] Selected Quarterly Financial Data Schedule Of Quarterly Financial Information Table [Text Block] Number of revenue generating product. Nature Of Business [Line Items] Nature Of Business [Table] Nature Of Business [Table] Nature Of Business [Table] Legal Entity Legal Entity [Axis] Entity Entity [Domain] Emergent BioSolutions Inc. Emergent Emergent Bio Solutions Inc [Member] Nature Of Business [Line Items] Nature Of Business [Line Items] Number of revenue-generating product Number Of Revenue Generating Product Entity incorporation month and year of incorporation. Number of independent publicly traded companies. Number of independent publicly traded companies Number Of Independent Publicly Traded Companies Month and year of incorporation Entity Incorporation Month And Year Of Incorporation Date of spinoff. Spin off transaction separation distribution agreement date Date Of Spinoff Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table] Disposal Group Classification Disposal Group Classification [Axis] Disposal Group Classification Disposal Group Classification [Domain] Hyperimmune business. Hyperimmune Business Hyperimmune Business [Member] Range Range [Axis] Range Range [Member] Maximum Maximum [Member] Minimum [Member] Minimum [Member] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] Business sale agreement date Disposal Date1 Business sale completion date Liquidation Date1 Disposal group including discontinued operation cash consideration in escrow account. Disposal group including discontinued operation additional consideration based on gross profit milestone. Disposal group including discontinued operation additional consideration based on collection of receivables milestone. Cash payment received Disposal Group Including Discontinued Operation Consideration Escrow receivable Disposal Group Including Discontinued Operation Cash Consideration In Escrow Account Additional potential milestone payment related to gross profit Disposal Group Including Discontinued Operation Additional Consideration Based On Gross Profit Milestone Additional potential milestone payment related to accounts receivable Disposal Group Including Discontinued Operation Additional Consideration Based On Collection Of Receivables Milestone Net gain on sale of business Disposal group including discontinued operation consideration cash consideration. Disposal group including discontinued operation transaction costs. Disposal group including discontinued operations working capital adjustment. Cash payment received Disposal Group Including Discontinued Operation Consideration Cash Consideration Total consideration Net carrying value of assets transferred to Saol Assets Of Disposal Group Including Discontinued Operation Transaction costs Disposal Group Including Discontinued Operation Transaction Costs Working capital adjustment Disposal Group Including Discontinued Operations Working Capital Adjustment Net gain on sale of business Accounts receivable Disposal Group Including Discontinued Operation Accounts Notes And Loans Receivable Net Inventories Disposal Group Including Discontinued Operation Inventory Current Total current assets, held for sale Intangible assets, net Disposal Group Including Discontinued Operation Intangible Assets Noncurrent Total assets held for sale Accounts payable and other accrued liabilities Disposal Group Including Discontinued Operation Accounts Payable And Accrued Liabilities Current Total current liabilities Disposal group including discontinued operation product sales. Disposal group including discontinued operation research and development. Disposal group including discontinued operation revenues. Disposal group including discontinued operation cost and expenses. Revenues: Disposal Group Including Discontinued Operation Revenues [Abstract] Product sales Disposal Group Including Discontinued Operation Product Sales Total revenues Disposal Group Including Discontinued Operation Revenue Costs and expenses: Disposal Group Including Discontinued Operation Cost And Expenses [Abstract] Cost of product sales Disposal Group Including Discontinued Operation Costs Of Goods Sold Research and development Disposal Group Including Discontinued Operation Research And Development Selling, general and administrative Disposal Group Including Discontinued Operation General And Administrative Expense Income from operations Disposal Group Including Discontinued Operation Operating Income Loss Income from discontinued operations, before income taxes Depreciation discontinued operations. Amortization discontinued operations. Other non-cash operating activities discontinued operations. Other non-cash investing activities discontinued operations. Amortization Amortization Discontinued Operations Depreciation Depreciation Discontinued Operations Capital expenditures Capital Expenditure Discontinued Operations Other non-cash operating activities Other Noncash Operating Activities Discontinued Operations Other non-cash investing activities Other Noncash Investing Activities Discontinued Operations Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table] Type of Arrangement and Non-arrangement Transactions Type Of Arrangement [Axis] Arrangements and Non-arrangement Transactions Arrangements And Nonarrangement Transactions [Member] MorphoSys agreement. MorphoSys Agreement Morphosys Agreement [Member] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] Deferred revenue Deferred Revenue Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Hierarchy Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy Fair Value Measurements Fair Value Hierarchy [Domain] Level 1 Fair Value Inputs Level1 [Member] Level 2 Fair Value Inputs Level2 [Member] Level 3 Fair Value Inputs Level3 [Member] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Money Market Funds Money Market Funds [Member] Corporate bonds. Corporate Bonds Corporate Bonds [Member] US Government and Agency Debt Securities U S Government Agencies Debt Securities [Member] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Financial Assets: Assets Fair Value Disclosure [Abstract] Assets fair value Assets Fair Value Disclosure Schedule of fair value disclosure. Schedule of fair value disclosure. Schedule Of Fair Value Disclosure [Table] Schedule Of Fair Value Disclosure [Table] Cash and Cash Equivalents Cash And Cash Equivalents [Axis] Cash and Cash Equivalents Restricted Cash And Cash Equivalents Cash And Cash Equivalents [Member] Demand Deposit Accounts Demand Deposits [Member] Schedule Of Fair Value Disclosure [Line Items] Schedule Of Fair Value Disclosure [Line Items] Fair value assets, level 1 to level 2 transfers Fair Value Assets Level1 To Level2 Transfers Amount Fair value assets, level 2 to level 1 transfers Fair Value Assets Level2 To Level1 Transfers Amount Cash held in demand deposit accounts Cash Available For Sale Securities [Abstract] Schedule Of Available For Sale Securities [Table] Schedule Of Available For Sale Securities [Table] Cash Equivalents Cash Equivalents [Member] Investment Type Investment Type [Axis] Investments Investment Type Categorization [Member] Money Market Fund Short-term Investments Short Term Investments [Member] Major Types of Debt and Equity Securities Major Types Of Debt And Equity Securities [Axis] Major Types of Debt and Equity Securities Major Types Of Debt And Equity Securities [Domain] Schedule Of Available For Sale Securities [Line Items] Schedule Of Available For Sale Securities [Line Items] Amortized Cost Available For Sale Securities Amortized Cost Gross Unrealized Holding Gains Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax Gross Unrealized Holding (Losses) Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax Estimated Fair Value Available For Sale Securities Inventory Adjustments [Abstract] Raw materials and supplies Inventory Raw Materials And Supplies Net Of Reserves Work-in-process Inventory Work In Process Net Of Reserves Finished goods Inventory Finished Goods Net Of Reserves Total inventories Manufacturing agreement, reserve held. Number of batches to be manufactured in one year. Term of supply agreement. Supply agreement renewable term description. Reduction in cost to inventory. Inventory Current [Table] Inventory Current [Table] Related Party Related Party Transactions By Related Party [Axis] Related Party Related Party [Domain] CMC ICOS Biologics, Inc CMC C M C I C O S Biologics Inc [Member] Amended and restated commercial supply agreement. Manufacturing Services Agreement Amended And Restated Commercial Supply Agreement [Member] Minimum Scenario Statement Scenario [Axis] Scenario, Unspecified Scenario Unspecified [Domain] Beginning two thousand eighteen. Beginning 2018 Beginning Two Thousand Eighteen [Member] Through the end two thousand seventeen. Through the End 2017 Through The End Two Thousand Seventeen [Member] Inventory [Line Items] Inventory [Line Items] Manufacturing agreement, reserve held Manufacturing Agreement Reserve Held Manufacturing agreement, number of batches Number Of Batches To Be Manufactured In One Year Expiration period of supply agreement Term Of Supply Agreement Supply agreement renewable term description Supply Agreement Renewable Term Description Description of quantity of batches manufactured Inventory Related Text Reduction in cost to inventory Reduction In Cost To Inventory Line Of Credit Facility [Table] Line Of Credit Facility [Table] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] Credit facility first tranche. Credit Facility First Tranche Credit Facility First Tranche [Member] Credit facility second tranche. Credit Facility Second Tranche Credit Facility Second Tranche [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Line of Credit Line Of Credit [Member] Line Of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Maximum borrowing capacity Line Of Credit Facility Maximum Borrowing Capacity Credit facility repayment term, description Line Of Credit Facility Frequency Of Payment And Payment Terms Credit facility repayment period Line Of Credit Facility Expiration Period Maturity date of credit agreement Line Of Credit Facility Expiration Date1 Credit agreement reference rate for the variable rate Debt Instrument Description Of Variable Rate Basis Credit agreement basis spread on variable rate Debt Instrument Basis Spread On Variable Rate1 Net commercial product revenue required to be achieved on trailing twelve month basis Revenue Recognition Milestone Method Revenue Recognized Cash funding committed by Emergent in connection with spin-off Due From Other Related Parties Debt issuance costs Unamortized debt issuance costs Unamortized Debt Issuance Expense Credit agreement exit fee percentage. Line of credit, maximum borrowing capacity withdrawal month and year. Credit agreement final principal payment, percentage. Credit agreement minimum cash threshold required amount. Maximum borrowing capacity withdrawal date of tranche Line Of Credit Maximum Borrowing Capacity Withdrawal Month And Year Credit agreement exit fee, percentage Credit Agreement Exit Fee Percentage Credit agreement final principal payment, percentage Credit Agreement Final Principal Payment Percentage Credit agreement minimum cash threshold required amount Credit Agreement Minimum Cash Threshold Required Amount Prepayment of term loans. Prepayment of term loans Prepayment Of Term Loans Termination amount of line of credit facility maximum borrowing capacity. Term loans extended amortization date based on achievement of revenue recognized. Revenue recognition of net commercial product date to be achieved. Terminated maximum borrowing capacity Termination Amount Of Line Of Credit Facility Maximum Borrowing Capacity Term loans extended amortization date based on net commercial product revenues recognized Term Loans Extended Amortization Date Based On Achievement Of Revenue Recognized Net commercial product revenue, date to be achieved Revenue Recognition Of Net Commercial Product Date To Be Achieved Net commercial product revenue requirements to be maintained Revenue Recognition Milestone Method Description Schedule of earnings per share basic and diluted. Schedule of earnings per share basic and diluted. Schedule Of Earnings Per Share Basic And Diluted [Table] Schedule Of Earnings Per Share Basic And Diluted [Table] Restructuring Type Restructuring Cost And Reserve [Axis] Type of Restructuring Type Of Restructuring [Domain] Spin-off Spinoff [Member] Schedule Of Earnings Per Share Basic And Diluted [Line Items] Schedule Of Earnings Per Share Basic And Diluted [Line Items] Ordinary shares outstanding Ordinary shares issued in connection with spin-off Net income (loss) Net income (loss) Antidilutive Securities Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities Name [Domain] Outstanding Options to Purchase Common Stock Employee Stock Option [Member] Unvested RSUs Restricted Stock Units R S U [Member] Anti-dilutive shares excluded from calculation of diluted net loss per share Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Proceeds from payment for former parent upon spin-off, net of receivable. Working capital reimbursement for outstanding payments receivable. Noncash transfer of intangible asset. Stockholders equity net transfers of cash from former parent. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Promissory note. Promissory Note Promissory Note [Member] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Converted equity awards incentive plan. Converted Equity Awards Incentive Plan Converted Equity Awards Incentive Plan [Member] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Two thousand sixteen stock incentive plan. 2016 Stock Incentive Plan Two Thousand Sixteen Stock Incentive Plan [Member] Title of Individual Title Of Individual [Axis] Relationship to Entity Title Of Individual With Relationship To Entity [Domain] Non-employee directors. Non-employee Directors Non Employee Directors [Member] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] RSUs Restated 2016 Stock Incentive Plan. Restated 2016 Plan Restated Two Thousand Sixteen Stock Incentive Plan [Member] Stock Option Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Shares issued Shares Issued One-time payment amount Proceeds From Payment For Former Parent Upon Spin Off Net Of Receivable Working capital reimbursement for outstanding payments Working Capital Reimbursement For Outstanding Payments Receivable Noncash transfer of intangible asset Noncash Transfer Of Intangible Asset Net transfers of cash from former parent Stockholders Equity Net Transfers Of Cash From Former Parent Cash received for a promissory note issued at the time of the spin-off. Incremental stock-based compensation expense recorded as result of equity award conversion Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost Stock authorized for issuance under Stock Plan Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Stock plan vesting period Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 Stock plan termination period Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period Increase in number of authorized shares issuable. Increase of authorized shares issuable Increase In Number Of Authorized Shares Issuable Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Research and Development Research And Development Expense [Member] Selling, General and Administrative Selling General And Administrative Expenses [Member] Stock-based compensation expense Allocated Share Based Compensation Expense Expected dividend yield Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Expected volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Risk-free interest rate Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Expected average life of options Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 Share based compensation arrangement by share based payment award forfeiture rate. Estimated forfeiture rate Share Based Compensation Arrangement By Share Based Payment Award Forfeiture Rate Number of Shares, Outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Number of Shares, Granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Number of Shares, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Number of Shares, Outstanding, Ending balance Number of Shares, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Weighted-Average Exercise Price, Outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Weighted-Average Exercise Price, Granted Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Weighted-Average Exercise Price, Forfeited Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Weighted-Average Exercise Price, Outstanding, Ending balance Weighted-Average Exercise Price, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Weighted-Average Remaining Term, Outstanding Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Weighted-Average Remaining Term, Exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 Share based compensation arrangement by share based payment award options granted intrinsic value. Share based compensation arrangement by share based payment award options forfeitures in period intrinsic value. Aggregate Intrinsic Value, Outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Aggregate Intrinsic Value, Granted Share Based Compensation Arrangement By Share Based Payment Award Options Granted Intrinsic Value Aggregate Intrinsic Value, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Intrinsic Value Aggregate Intrinsic Value, Outstanding, Ending balance Aggregate Intrinsic Value, Exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Sharebased compensation arrangement by sharebased payment award options expected to vest weighted average period. Unrecognized compensation expense Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Options expected to vest, weighted average period Sharebased Compensation Arrangement By Sharebased Payment Award Options Expected To Vest Weighted Average Period Share based compensation arrangement by share based payment award equity instrument other than options expected to vest number. Number of Units, Outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Number of Units, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Number of Units, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Number of Units, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Number of Units, Outstanding, Ending balance Number of Units, Expected to Vest Share Based Compensation Arrangement By Share Based Payment Award Equity Instrument Other Than Options Expected To Vest Number Share based compensation arrangement by share based payment award equity instruments other than options, expected to vest, weighted average grant date fair value. Weighted Average Fair Value per Unit, Outstanding Beginning Balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Weighted Average Fair Value per Unit, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Weighted Average Fair Value per Unit, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Weighted Average Fair Value per Unit, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Weighted Average Fair Value per Unit, Outstanding Ending Balance Weighted Average Fair Value per Unit, Expected to Vest Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Weighted Average Grant Date Fair Value Share based compensation arrangement by share based payment award equity instruments other than options aggregate fair value granted. Share based compensation arrangement by share based payment award equity instruments other than options aggregate fair value vested. Share based compensation arrangement by share based payment award equity instruments other than options aggregate fair value forfeited. Share based compensation arrangement by share based payment award equity instruments other than options aggregate fair value. Share based compensation arrangement by share based payment award equity instruments other than options aggregate fair value expect to vest. Aggregate Fair Value, Outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Aggregate Fair Value Aggregate Fair Value, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Aggregate Fair Value Granted Aggregate Fair Value, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Aggregate Fair Value Vested Aggregate Fair Value, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Aggregate Fair Value Forfeited Aggregate Fair Value, Outstanding, Ending balance Aggregate Fair Value, Expected to Vest Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Aggregate Fair Value Expect To Vest Unrecognized compensation expense Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Expected vesting period Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Weighted average remaining contractual life Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms Effect of error in net assets distributed spin-off. In process research and development. Schedule Of Error Corrections And Prior Period Adjustment Restatement [Table] Schedule Of Error Corrections And Prior Period Adjustment Restatement [Table] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition Acquiree [Domain] Turbion Pharmaceuticals Inc. Trubion Pharmaceuticals, Inc. Turbion Pharmaceuticals Inc [Member] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] IPR&D Asset In Process Research And Development [Member] Restatement Adjustment Restatement Adjustment [Member] Error Corrections And Prior Period Adjustments Restatement [Line Items] Error Corrections And Prior Period Adjustments Restatement [Line Items] IPR&D assets recorded In Process Research And Development Error effect of net assets distributed in spin-off Effect Of Error In Net Assets Distributed Spin Off Impariment of intangible assets Impairment Of Intangible Assets Finitelived As Previously Reported Scenario Previously Reported [Member] Impairment expense Loss from operations Loss before income taxes Quarterly Financial Information Disclosure [Abstract] Revenue Net loss per share - basic and diluted Earnings Per Share Basic And Diluted