Entity Central Index Key Document and entity information. 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 Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current Assets Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Other receivables Other Receivables Net Current Prepaid expenses Prepaid Expense Current Other current assets Other Assets Current Total current assets Assets Current Goodwill Goodwill Other non-current assets Other Assets Noncurrent Total assets Assets Liabilities and Stockholders’ equity Liabilities And Stockholders Equity [Abstract] Current Liabilities Liabilities Current [Abstract] Accounts payable and accrued expenses Accounts Payable And Accrued Liabilities Current Total current liabilities Liabilities Current Deferred rent Deferred Rent Credit Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 8) Commitments And Contingencies Stockholders' equity (deficit) Stockholders Equity [Abstract] Preferred stock, $0.01 par value, 5,000,000 shares authorized None issued and outstanding Preferred Stock Value Common stock: $0.0001 par value, 120,000,000 shares authorized, 11,422,161 and 6,047,161 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively Common Stock Value Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Additional paid-in capital Additional Paid In Capital Common Stock 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 License Fee Income Statement [Abstract] Operating expenses: Operating Expenses [Abstract] General and administrative General And Administrative Expense Research and development expenses Research And Development Expense License expenses License Fee Impairment of goodwill Goodwill Impairment Loss Total operating expenses Operating Expenses Loss from operations Operating Income Loss Other income (expense) Other Nonoperating Income Expense Net loss Net Income Loss Foreign currency translation adjustments Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Comprehensive loss Comprehensive Income Net Of Tax Loss per common share - basic and diluted Earnings Per Share Basic And Diluted Weighted average number of common shares outstanding: Weighted Average Number Of Shares Outstanding [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Increase (decrease) in other assets and deferred charges. Net proceeds from issuance of common stock and warrants. Statement Of Cash Flows [Abstract] Operating activities: Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Net loss 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 Changes in operating assets and liabilities, net impact of acquisition: Increase Decrease In Operating Capital [Abstract] Other receivables Increase Decrease In Other Receivables Prepaid expenses Increase Decrease In Prepaid Expense Other current assets Increase Decrease In Other Current Assets Other assets and deferred charges Increase Decrease In Other Assets And Deferred Charges Accounts payable and accrued expenses Increase Decrease In Accounts Payable And Accrued Liabilities Interest payable Increase Decrease In Interest Payable Net Deferred rent Increase Decrease In Deferred Liabilities Net cash used in operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Financing activities: Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Net proceeds from issuance of common stock and warrants Net Proceeds From Issuance Of Common Stock And Warrants Proceeds from issuance of convertible promissory notes Proceeds From Convertible Debt Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Effect of exchange rate changes on cash and cash equivalents Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations Net change in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Organization Consolidation And Presentation Of Financial Statements [Abstract] Organization and Description of the Business Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Liquidity. Liquidity [Abstract] Liquidity Liquidation Basis Of Accounting [Text Block] Accounting Policies [Abstract] Significant Accounting Policies Significant Accounting Policies [Text Block] Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Debt Disclosure [Abstract] Convertible Promissory Notes Debt Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock-based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Equity [Abstract] Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments Disclosure [Text Block] Earnings Per Share [Abstract] Net Loss Per Share Earnings Per Share [Text Block] Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Basis of Presentation Basis Of Accounting Policy Policy [Text Block] Reverse Stock Split Stockholders Equity Policy [Text Block] Use of Estimates Use Of Estimates Principles of Consolidation Consolidation Policy [Text Block] Recent accounting pronouncements not yet adopted policy. Recent Accounting Pronouncements Not Yet Adopted Recent Accounting Pronouncements Not Yet Adopted Policy Policy [Text Block] Recently Adopted Accounting Standards New Accounting Pronouncements Policy Policy [Text Block] Fair Value Measurements Fair Value Measurement Policy Policy [Text Block] Schedule of business combination reverse merger. Schedule of Purchase Price Consideration Allocation Schedule Of Business Combination Reverse Merger [Text Block] Summary of Stock Option Activity for 2015 Plan and 2014 Plan and Related Information Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Summary of Assumptions Used in Black-Scholes Option-Pricing Model for Stock Options Granted to Employees and Directors Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Schedule of Common Stock Warrants Outstanding Schedule Of Stockholders Equity Note Warrants Or Rights [Text Block] Potential Dilutive Outstanding Securities Excluded From Diluted Net Loss Per Common Share Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Nature of business and operations. Nature of business and operations. Nature Of Business And Operations [Table] Nature Of Business And Operations [Table] Legal Entity Legal Entity [Axis] Entity Entity [Domain] Private Dare. Private Dare [Member] Private Dare [Member] Nature Of Business And Operations [Line Items] Nature Of Business And Operations [Line Items] Date of Company's incorporation Entity Incorporation Date Of Incorporation Number of operating segments Number Of Operating Segments Number of clinical stage assets assembled as portfolio. Number of clinical stage assets assembled as portfolio Number Of Clinical Stage Assets Assembled As Portfolio Stock purchase and other transactions completion date. Stock purchase agreement date. Business combination completed date Business Acquisition Effective Date Of Acquisition1 Stock purchase transaction completion date Stock Purchase And Other Transactions Completion Date Stock purchase agreement date Stock Purchase Agreement Date Liquidity. Liquidity. Liquidity [Table] Liquidity [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Sale of Stock Subsidiary Sale Of Stock [Axis] Sale of Stock Sale Of Stock Name Of Transaction [Domain] ATM agreement. ATM Agreement [Member] A T M Agreement [Member] Underwritten Offering [Member] Over Allotment Option [Member] Range Range [Axis] Range Range [Member] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Liquidity [Line Items] Liquidity [Line Items] Cash flow from operations Gross proceeds from issuance of common stock. Gross proceeds from offering of common Stock and warrants. Proceeds from issuance of common stock and warrants. Gross proceeds on sale of shares of common stock Gross Proceeds From Issuance Of Common Stock Aggregate net proceeds on sales of shares of common stock Proceeds From Issuance Of Common Stock Issuance of aggregate shares of common stock Stock Issued During Period Shares New Issues Gross proceeds from offering of common stock and warrants Gross Proceeds From Offering Of Common Stock And Warrants Proceeds from offering of common stock and warrants, net of costs Proceeds From Issuance Of Common Stock And Warrants Warrants to purchase common stock Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Significant accounting policies. Significant Accounting Policies [Table] Significant Accounting Policies [Table] Measurement Frequency Fair Value By Measurement Frequency [Axis] Fair Value, Measurement Frequency Fair Value Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value Measurements Recurring [Member] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Reverse stock split Stockholders Equity Reverse Stock Split Reverse stock split, conversion ratio Stockholders Equity Note Stock Split Conversion Ratio1 Cash and cash equivalents Cash And Cash Equivalents Fair Value Disclosure Stock purchase transaction completion date. Business combination reverse merger recognized identifiable assets acquired and liabilities assumed cash and equivalents. Business combination reverse merger unamortized fair value of stock options. Stock option modification approval date. Business combination reverses merger stock purchase transaction cost. Business combination reverse merger consideration transferred. Business combination reverse merger. Schedule of business combination reverse merger. Schedule Of Business Combination Reverse Merger [Table] Schedule Of Business Combination Reverse Merger [Table] Cerulean/Private Dare stock purchase transaction. Cerulean/Private Dare Stock Purchase Transaction [Member] Cerulean Private Dare Stock Purchase Transaction [Member] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] General and Administrative Expense [Member] General And Administrative Expense [Member] Business Combination Reverse Merger [Line Items] Business Combination Reverse Merger [Line Items] Stock purchase transaction closed date Stock Purchase Transaction Completion Date Cash and cash equivalents Business Combination Reverse Merger Recognized Identifiable Assets Acquired And Liabilities Assumed Cash And Equivalents Unamortized fair value of stock options Business Combination Reverse Merger Unamortized Fair Value Of Stock Options Stock option modification approval date Stock Option Modification Approval Date Transaction costs Business Combination Reverse Merger Stock Purchase Transaction Cost Total purchase price consideration Business Combination Reverse Merger Consideration Transferred Business combination reverse merger consideration transferred equity interests issued and issuable. Business combination reverse merger recognized identifiable assets acquired and liabilities assumed net. Business combination reverse merger recognized identifiable assets acquired and liabilities assumed current assets prepaid expense and other current assets. Business combination reverse merger recognized identifiable assets acquired and liabilities assumed current liabilities accounts payable. Business combination reverse merger recognized identifiable assets acquired and liabilities assumed net. Fair value of shares issued Business Combination Reverse Merger Consideration Transferred Equity Interests Issued And Issuable Unamortized fair value of Cerulean options Fair value of total consideration Assets acquired and liabilities assumed Business Combination Reverse Merger Recognized Identifiable Assets Acquired And Liabilities Assumed Net [Abstract] Prepaid expense and other current assets Business Combination Reverse Merger Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Current Assets Accounts payable Business Combination Reverse Merger Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable Total assets acquired and liabilities assumed Business Combination Reverse Merger Recognized Identifiable Assets Acquired And Liabilities Assumed Net Business combination purchase price adjustment increase in current liabilities. Business combination purchase price adjustment increase in current assets. Purchase price adjustments increase in current liabilities Business Combination Purchase Price Adjustment Increase In Current Liabilities Purchase price adjustments increase in current assets Business Combination Purchase Price Adjustment Increase In Current Assets Reduction in original goodwill Goodwill Purchase Accounting Adjustments Original goodwill amount acquired Goodwill Acquired During Period Goodwill impairment charge Percentage of conversion benefit on preferred stock financing. Debt Conversion [Table] Debt Conversion [Table] Debt Conversion [Line Items] Debt Conversion [Line Items] Note annual interest rate Debt Instrument Interest Rate Stated Percentage Percentage of conversion benefit on preferred stock financing Percentage Of Conversion Benefit On Preferred Stock Financing Convertible promissory notes issued Percentage of conversion benefit. Convertible notes issued, per share Share Price Percentage of conversion benefit Percentage Of Conversion Benefit Conversion percentage Debt Instrument Redemption Price Percentage Of Principal Amount Redeemed Debt instrument expense recognized from outstanding convertible debt. Expense recognized from outstanding convertible debt Debt Instrument Expense Recognized From Outstanding Convertible Debt Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Two Thousand And Fifteen Stock Incentive Plan [Member] 2015 Stock Incentive Plan [Member] Two Thousand And Fifteen Stock Incentive Plan [Member] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Stock Options [Member] Employee Stock Option [Member] Restricted Stock [Member] Restricted Stock [Member] Two thousand and fourteen employee stock purchase plan. 2014 Employee Stock Purchase Plan [Member] Two Thousand And Fourteen Employee Stock Purchase Plan [Member] 2014 stock incentive plan. 2014 Stock Incentive Plan [Member] Two Thousand Fourteen Stock Incentive Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Stock options grant period Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 Stock options vesting period Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 Stock options granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Stock options outstanding Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Shares issued to non-employees Stock Issued During Period Shares Restricted Stock Award Gross