Entity Central Index Key Document Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Deferred related party revenue, current. Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current assets Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Marketable securities Marketable Securities Current Restricted cash Restricted Cash And Cash Equivalents At Carrying Value Prepaid expenses and other current assets Prepaid Expense Current Total current assets Assets Current Equipment, net Property Plant And Equipment Net In-process research and development Intangible Assets Net Excluding Goodwill Goodwill Goodwill Total assets Assets Liabilities and Stockholders’ Equity Liabilities And Stockholders Equity [Abstract] Current liabilities Liabilities Current [Abstract] Notes payable - current portion Notes Payable Current Accounts payable Accounts Payable Current Accrued expenses and other current liabilities Accounts Payable And Other Accrued Liabilities Current Accrued collaborative expenses - related party Deferred Related Party Revenue Current Total current liabilities Liabilities Current Notes payable - noncurrent Long Term Notes Payable Deferred taxes Deferred Tax Liabilities Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments And Contingencies Stockholders’ equity Stockholders Equity [Abstract] Preferred stock; $0.0001 par value; 100,000,000 shares authorized; none issued or outstanding as of March 31, 2017 and December 31, 2016, respectively Preferred Stock Value Common stock; $0.0001 par value; 125,000,000 shares authorized; 36,704,872 and 35,024,002 shares issued and outstanding as of March 31, 2017 and December 31, 2016, respectively Common Stock Value 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 (in dollars per share) 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 (in dollars per share) 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 Income Statement [Abstract] Expenses Operating Expenses [Abstract] Research and development Research And Development Expense General and administrative General And Administrative Expense Total expenses Operating Expenses Loss from operations Operating Income Loss Foreign exchange losses Foreign Currency Transaction Gain Loss Before Tax Investment income Investment Income Interest Interest expense Interest Income Expense Nonoperating Net Net loss Net Income Loss Net loss per share, basic and diluted Earnings Per Share Basic And Diluted Weighted average shares outstanding, basic and diluted Weighted Average Number Of Share Outstanding Basic And Diluted Stock issued during period value exercise of warrants. Stock issued during period shares exercise of warrants. Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid In Capital [Member] Accumulated Deficit Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Balance Balance (in shares) Exercise of common stock warrants Stock Issued During Period Value Exercise Of Warrants Exercise of common stock warrants (in shares) Stock Issued During Period Shares Exercise Of Warrants Exercise of stock options Stock Issued During Period Value Stock Options Exercised Exercise of stock options (in shares) Stock Issued During Period Shares Stock Options Exercised Issuance of common stock Stock Issued During Period Value New Issues Issuance of common stock (in shares) Stock Issued During Period Shares New Issues Stock-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Net loss Balance Balance (in shares) Increase decrease in prepaid expense other current assets. Statement Of Cash Flows [Abstract] Cash flows from 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] Depreciation and amortization Depreciation Depletion And Amortization Amortization of debt discount recorded as interest expense Amortization Of Debt Discount Premium Amortization of marketable securities premium Investment Income Net Amortization Of Discount And Premium Stock-based compensation expense Share Based Compensation Changes in operating assets and liabilities Increase Decrease In Operating Capital [Abstract] Prepaid expenses and other current assets Increase Decrease In Prepaid Expense Other Current Assets Accounts payable Increase Decrease In Accounts Payable Accrued expenses and other current liabilities Increase Decrease In Accrued Liabilities Accrued collaborative expenses Increase Decrease In Deferred Revenue Other noncurrent liabilities Increase Decrease In Other Noncurrent Liabilities Net cash used in operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Cash flows from investing activities: Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Proceeds from the maturity and redemption of marketable securities Proceeds From Sale And Maturity Of Marketable Securities Purchase of marketable securities Payments To Acquire Marketable Securities Net cash (used in) provided by investing activities Net Cash Provided By Used In Investing Activities Continuing Operations Cash flows from financing activities: Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Proceeds from exercise of common stock warrants Proceeds From Warrant Exercises Proceeds from exercise of stock options Proceeds From Stock Options Exercised Repayments of notes payable Repayments Of Senior Debt Proceeds from sale of common stock in private placement Proceeds From Issuance Of Private Placement Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Net (decrease) increase in cash and cash equivalents Net Cash Provided By Used In Continuing Operations Cash and cash equivalents Cash And Cash Equivalents At Carrying Value [Abstract] Beginning of period End of period Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Nature Of Operations And Liquidity Disclosure [Abstract] Nature of Operations and Liquidity Nature Of Operations Accounting Policies [Abstract] Significant Accounting Policies Significant Accounting Policies [Text Block] Payables And Accruals [Abstract] Accrued Expenses Accounts Payable And Accrued Liabilities Disclosure [Text Block] Earnings Per Share [Abstract] Net Loss Per Share of Common Stock Earnings Per Share [Text Block] Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Co development and license agreement disclosure. Co Development And License Agreement Disclosure [Abstract] Co-Development and License Agreement Collaborative Arrangement Disclosure [Text Block] Stockholders Equity Note [Abstract] Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock Option Plan and Stock-Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Basis of Presentation Basis Of Accounting Policy Policy [Text Block] Consolidation Consolidation Policy [Text Block] Disclosure of accounting policy for significant risks and uncertainties. Significant Risks and Uncertainties Significant Risks And Uncertainties Policy [Text Block] Use of Estimates Use Of Estimates Cash and Cash Equivalents Cash And Cash Equivalents Policy [Text Block] Restricted Cash Cash And Cash Equivalents Restricted Cash And Cash Equivalents Policy Marketable Securities Marketable Securities Policy Research and Development Costs Research And Development Expense Policy In-Process Research and Development In Process Research And Development Policy Stock-Based Compensation Share Based Compensation Option And Incentive Plans Policy Foreign Currency Transactions Foreign Currency Transactions And Translations Policy [Text Block] Loss Per Share Earnings Per Share Policy [Text Block] Concentration of Credit Risk Concentration Risk Credit Risk Long-Lived Assets Impairment Or Disposal Of Long Lived Assets Policy [Text Block] Goodwill Goodwill And Intangible Assets Goodwill Policy Segment Information Segment Reporting Policy Policy [Text Block] Comprehensive Loss Comprehensive Income Policy Policy [Text Block] Recent Accounting Pronouncements New Accounting Pronouncements Policy Policy [Text Block] Amortized Cost Basis, Aggregate Fair Value, Net Unrealized (Gains)/Losses and Net Carrying Value of Investments in Held-to-maturity Securities Held To Maturity Securities [Text Block] Schedule of Accrued Expenses and Other Liabilities Schedule Of Accrued Liabilities Table [Text Block] Computation of Basic and Diluted Loss Per Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Securities Excluded from Calculation of Weighted Average Shares Outstanding as their Effect is Antidilutive Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Summary of Outstanding Term A Loans and Debt Discount Schedule Of Debt Table [Text Block] Expected Remaining Repayment of Term A Loan Principal Schedule Of Maturities Of Long Term Debt Table [Text Block] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Non employee stock option. Non-Employees Stock Options Non Employee Stock Option [Member] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Schedule of Stock Option Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Summary of Assumptions Used in Black Scholes Model to Estimate Fair Value of Stock Options Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Schedule of RSU Activity Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] Number of licenses acquired. Nature of operations and liquidity. Disclosure pertaining to nature of operations and liquidity. Nature Of Operations And Liquidity [Table] Nature Of Operations And Liquidity [Table] Indefinite-lived Intangible Assets Indefinite Lived Intangible Assets By Major Class [Axis] Indefinite-lived Intangible Assets, Major Class Name Indefinite Lived Intangible Assets Major Class Name [Domain] Development-stage Proprietary Compounds In Process Research And Development [Member] Nature Of Operations And Liquidity [Line Items] Nature Of Operations And Liquidity [Line Items] Number of licenses acquired Number Of Licenses Acquired Net cash used in operating activities Significant accounting policies. Significant accounting policies. Significant Accounting Policies [Table] Significant Accounting Policies [Table] Counterparty Name Counterparty Name [Axis] Counterparty Name Repurchase Agreement Counterparty Name [Domain] Janssen Pharmaceutica NV and Janssen research and development LLC. Janssen and JJDC Janssen Pharmaceutica N V And Janssen Research And Development L L C [Member] Type of Arrangement and Non-arrangement Transactions Type Of Arrangement [Axis] Arrangements and Non-arrangement Transactions Arrangements And Nonarrangement Transactions [Member] Co-development and License Agreement Collaborative Arrangement [Member] Products and Services Product Or Service [Axis] Products and Services Products And Services [Domain] Represents information pertaining to MIN-202. MIN-202 M I N202 [Member] In-Process Research and Development Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Restricted cash balances as collateral for corporate credit cards Marketable securities, weighted average remaining maturity. Marketable securities, weighted average remaining maturity Marketable Securities Weighted Average Remaining Maturity Held to maturity securities accumulated unrecognized holding gain loss. Investments Debt And Equity Securities [Abstract] Schedule Of Held To Maturity Securities [Table] Schedule Of Held To Maturity Securities [Table] Investment Type Investment Type [Axis] Investments Investment Type Categorization [Member] Corporate bond securities current. Corporate Bonds - Current Corporate Bond Securities Current [Member] Schedule Of Held To Maturity Securities [Line Items] Schedule Of Held To Maturity Securities [Line Items] Marketable securities, Amortized Cost Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment Marketable securities, Aggregate Fair Value Held To Maturity Securities Fair Value Marketable securities, Net Unrealized (Gains)/Losses Held To Maturity Securities Accumulated Unrecognized Holding Gain Loss Marketable securities, Net Carrying Value Held To Maturity Securities Development cost offset. Accrued research and development costs current. Research and development expense Development cost offset Development Cost Offset Accrued collaborative expenses Accrued Research And Development Costs Current Asset impairment charges Impairment Of Intangible Assets Indefinitelived Excluding Goodwill Impairment of Long-Lived Assets Impairment Of Long Lived Assets Held For Use Impairment of goodwill Goodwill Impairment Loss Represents the carrying value, as of the balance sheet date, of obligations incurred through that date and payable for research and development costs. It is used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle, if longer). Research and development costs and other accrued expenses Accrued Research And Development Costs And Other Expenses Current Professional fees Accrued Professional Fees Current Accrued bonus Accrued Bonuses Current Interest payable Interest Payable Current Vacation payable Accrued Vacation Current Accrued expenses and other liabilities Weighted average shares of common stock outstanding