Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Trading Symbol Entity Common Stock, Shares Outstanding Entity Emerging Growth Company Entity Small Business Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series A Preferred Stock [Member] Series A Preferred Stock [Member] Series B Preferred Stock [Member] Series B Preferred Stock [Member] Statement [Line Items] Statement [Line Items] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Prepaid Expense, Current Prepaid expenses and deposits Assets, Current Total current assets Interest Receivable Interest receivable Assets TOTAL ASSETS Assets, Noncurrent [Abstract] Non-current assets: Property, Plant and Equipment, Net Property, plant and equipment, net Property, plant and equipment, net Operating Lease, Right-of-Use Asset Right-of-use assets, net Assets, Noncurrent Total non-current assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current liabilities: Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued liabilities Total accounts payable and accrued liabilities Derivative Liability, Current Warrant liability Liabilities, Current Total current liabilities Operating Lease, Liability, Current Lease liability Liabilities Total liabilities Commitments and Contingencies COMMITMENTS AND CONTINGENCIES Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Preferred Stock, Value, Issued Preferred Stock, Value Common Stock, Value, Issued Common stock, $0.001 par value, 150 million shares authorized, 45.5 million and 45.4 million shares issued and outstanding as of March 31, 2019 and December 31, 2018, respectively Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Liabilities, Noncurrent [Abstract] Non-current liabilities: Operating Lease, Liability, Noncurrent Lease liability, net of current portion Liabilities, Noncurrent Total non-current liabilities Stockholders' Equity Attributable to Parent Total stockholders' equity Beginning Balance Ending Balance Liabilities and Equity TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Preferred Stock, Par or Stated Value Per Share Preferred stock par value Preferred Stock, Shares Authorized Preferred stock shares authorized/designated Preferred Stock, Shares Issued Preferred stock issued Preferred Stock, Shares Outstanding Preferred stock outstanding Common Stock, Par or Stated Value Per Share Common stock shares par value 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] Costs and Expenses [Abstract] Operating expenses: Research and Development Expense Research and development General and Administrative Expense General and administrative Operating Expenses Total operating expenses Operating Income (Loss) Loss from operations Nonoperating Income (Expense) [Abstract] Other income (expense): Derivative, Gain (Loss) on Derivative, Net Change in fair value of warrant liabilities Investment Income, Interest Interest income Net Income (Loss) Attributable to Parent Net loss Net loss Net loss Net loss Earnings Per Share, Basic and Diluted Net loss per share, Basic and Diluted Basic and Diluted Weighted Average Number of Shares Outstanding, Basic and Diluted Weighted average number of common shares outstanding Product and Service [Axis] Product and Service [Domain] Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid- in Capital [Member] Retained Earnings [Member] Accumulated Deficit [Member] Shares, Issued Beginning Balance, Shares Ending Balance, Shares Exercise Of Warrants Amount Warrants exercised for cash Exercise of warrants amount. Exercise Of Warrants share Warrants exercised for cash, Shares Exercise of warrants share. Stock Issued During Period, Value, Stock Options Exercised Stock options exercised for cash Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock options exercised for cash, Shares Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock-based compensation Stock Issued During Period, Shares, Share-based Compensation, Gross Stock-based compensation, Shares Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash Flows from Operating Activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Reconciliation of net loss to net cash used in operating activities: Increase (Decrease) in Derivative Liabilities Changes in fair value of warrant liabilities Share-based Compensation Stock-based compensation Depreciation, Depletion and Amortization Depreciation and amortization Amortization Of Operating Lease Right Of Use Assets Amortization on right-of-use assets The expense charged against earnings for the periodic recognition of operating lease right of use asset. Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Prepaid Expense Prepaid expenses and deposits Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and accrued expenses Increase (Decrease) in Accrued Interest Receivable, Net Interest receivable Increase Decrease In Operating Lease Liability Lease liability The increase (decrease) during the period in operating lease liability. Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash Flows from Financing Activities: Proceeds from Warrant Exercises Proceeds from exercise of warrants Proceeds from Stock Options Exercised Proceeds from exercise of stock options Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Cash, Period Increase (Decrease) Net decrease in cash Cash Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Net Cash Provided by (Used in) Investing Activities [Abstract] Cash Flows from Investing Activities: Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Organization, Consolidation and Presentation of Financial Statements [Abstract] Nature of Operations [Text Block] NATURE OF OPERATIONS Basis of Accounting [Text Block] BASIS OF PRESENTATION Text Block [Abstract] Liquidity And Financial Condition TextBlock LIQUIDITY AND FINANCIAL CONDITION Liquidity And Financial Condition TextBlock Accounting Policies [Abstract] Significant Accounting Policies [Text Block] SIGNIFICANT ACCOUNTING POLICIES Noncontrolling Interest [Abstract] Noncontrolling Interest Disclosure [Text Block] NET LOSS PER SHARE APPLICABLE TO COMMON SHAREHOLDER Property, Plant and Equipment, Net, by Type [Abstract] Property, Plant and Equipment Disclosure PROPERTY AND EQUIPMENT Leases [Abstract] Lessee, Operating Leases [Text Block] LEASES Payables and Accruals [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] ACCOUNTS PAYABLE AND ACCRUED LIABILITIES Derivatives And Fair Value [Abstract] Derivatives and Fair Value [Text Block] WARRANT LIABILITY AND FAIR VALUE MEASUREMENTS Stockholders' Equity Note [Abstract] Stockholders' Equity Note Disclosure [Text Block] STOCKHOLDERS' EQUITY Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] STOCK-BASED COMPENSATION Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] COMMITMENTS Related Party Disclosure [Abstract] Related Party Disclosure Related Party Transactions Disclosure [Text Block] RELATED PARTY TRANSACTIONS New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Standards Lessee, Leases [Policy Text Block] Leases Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted Net Loss Per Share [Table Text Block] Net Loss Per Share Net Loss Per Share Property, Plant and Equipment Schedule Of Lease Cost And Other Information Related to Operating Leases [Table Text Block] Schedule Of Lease Cost And Other Information Related to Operating Leases Tabular disclosure of lease cost and other information related to operating leases. Lessee, Operating Lease, Liability, Maturity [Table Text Block] Lessee, Operating Lease, Liability, Maturity Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Schedule of Accounts Payable and Accrued Liabilities Valuation Methodology Valuation methodology. Financial Assets And Liabilities Measured At Fair Value On Recurring Basis [Table Text Block] Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Financial assets and liabilities measured at fair value on recurring basis. Schedule of Changes in Level 3 Liabilities Measured at Fair Value Measured at fair value. Stockholders Equity [Table] Stockholders' Equity. Stockholders Equity [Line Items] Stockholders' Equity. Share Purchase Warrants [Table Text Block] Schedule of share purchase warrants Tabular disclosure of share purchase warrants. Stock based Compensation Expenses [Table Text Block] Stock based Compensation Expenses Tabular disclosure of stock based compenstaion expenses recorded. Liquidity And Financial Condition Abstract [Abstract] Operating Lease, Liability Operating lease liabilities included in the Condensed Consolidated Balance Sheet at March 31, 2019 Deferred Rent Credit Subsequent Event Type [Axis] Subsequent Event Type [Domain] NotesToFinancialStatements [Abstract] Net Income (Loss) Attributable to Parent, Diluted [Abstract] Numerator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding Earnings Per Share, Basic and Diluted [Abstract] Net loss per share data: Common Stock Warrants Equity Treatment Common Stock Purchase Warrants Common stock warrants - equity treatment. Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Potentially dilutive securities Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Employee Stock Option [Member] Warrant [Member] Common Stock Warrants Liability Treatment [Member] Common Stock Warrants Liability Treatment Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Computer Equipment [Member] Office Equipment [Member] Equipment [Member] Lab Equipment [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Gross Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation Property, Plant and Equipment, Useful Life Range [Axis] Range [Domain] Maximum [Member] Minimum [Member] Depreciation Operating Lease Expense [Abstract] Operating Lease, Cost Short-term Lease, Cost Variable Lease, Cost Lease, Cost Other Lease Information [Abstract] Operating Lease, Payments Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Discount Rate, Percent Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Nine months ended December 31, 2019 Lessee, Operating Lease, Liability, Payments, Due Year Two Year ended December 31, 2020 Lessee, Operating Lease, Liability, Payments, Due Year Three Year ended December 31, 2021 Lessee, Operating Lease, Liability, Payments, Due Year Four Year ended December 31, 2022 Lessee, Operating Lease, Liability, Payments, Due Total Lessee, Operating Lease, Liability, Undiscounted Excess Amount Less present value discount Accounts Payable And Accrued Liabilities [Table] This table lists the accounts payable and accrued liabilities. The line items identify information about the accounts payable and accrued liabilities. Accounts Payable And Accrued Liabilities [Line Items] 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. Accounts Payable, Current Accounts payable Employee-related Liabilities, Current Compensation and benefits Accrued Professional Fees, Current Professional fees Accrued Technology License Fees Technology license fees Carrying value as of the balance sheet date of Consulting agreements payable. Accrued Investor Relations Fees Current Investor relations fees Represents the current portion of accrued investor relation fees. Other Accrued Liabilities, Current Other Fair Values Assumptions And Methodology ForAssets And Liabilities Abstract [Abstract] Fair Value Assumptions and Methodology for Assets and Liabilities. Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table] Share Purchase Warrants [Member] Share Purchase Warrants [Member] Share Purchase Warrants [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] Share Price Stock price Fair Values Assumptions Exercise Price Exercise price Agreed upon price for the exchange of the underlying asset. Fair Values Assumptions Expected Term Contractual term (years) Period the instrument, asset or liability is expected to be outstanding. Fair Values Assumptions Expected Volatility Rate Volatility (annual) Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Fair Values Assumptions Risk Free Interest Rate Risk-free rate Risk-free interest rate assumption used in valuing an instrument. Fair Values Assumptions Expected Dividend Rate Dividend yield (per share) Expected dividends to be paid to holders of the underlying shares or financial instruments. Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Derivative Liability, Fair Value, Gross Liability Warrant liability Hedging Relationship [Axis] Hedging Relationship [Domain] Fair Value Hedging [Member] Fair Value Disclosures [Abstract] Class of Warrant or Right [Table] Class of Warrant or Right [Line Items] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Balance Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease) Change in fair value of warrant liability Equity [Abstract] Class of Warrant or Right, Outstanding Number of Warrants, Beginning balance Number of Warrants, Ending balance Number Of Warrant Exercised For Cash Number of Warrant Exercised for cash Number of warrants exercised. Number Of Warrant Expired Or Cancelled Number of warrants expired or cancelled. Class Of Warrant Or Rights Outstanding Weighted Average Exercise Price Weighted Average Exercise Price, Beginning Balance Weighted Average Exercise Price, Ending Balance Class Of Warrant Or Rights Outstanding Weighted Average Exercise Price. Class Of Warrant Or Rights Outstanding Exercised Weighted Average Exercised For Cash Weighted Average Exercise Price, Exercised for cash Class of warrant or rights outstanding exercised weighted average exercise price. Class Of Warrant Or Rights Outstanding Expired Or Cancelled Weighted Average Exercise Price Weighted Average Exercise Price, Expired or cancelled Class of warrant or rights outstanding expired or Cancelled weighted average exercise price. Class Of Warrant Or Rights Outstanding Weighted Average Remaining Contractual Life Weighted Average Remaining Contractual Life, Outstanding (in years) Class of warrant or right outstanding issued weighted average remaining life. Class Of Warrant Or Right, Outstanding, Intrinsic Value Total Intrinsic Value Intrinsic value of outstanding class of warrant or right. Common Stock Capital Shares Reserved For Future Issuance [Table] Common Stock Capital Shares Reserved For Future Issuance [Table] Common Stock Capital Shares Reserved For Future Issuance [Table] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Type of Arrangement and Non-arrangement Transactions [Axis] Type of Arrangement and Non-arrangement Transactions [Axis] Arrangements and Non-arrangement Transactions [Domain] Arrangements and Non-arrangement Transactions [Domain] Consulting Agreements [Member] Consulting Agreements [Member] Consulting Agreements [Member] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Income Statement Location [Axis] Income Statement Location [Domain] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Exercise Of Stock Warrants [Member] Common Stock Capital Shares Reserved For Future Issuance [Line Items] Common Stock Capital Shares Reserved For Future Issuance [Line Items] Common Stock Capital Shares Reserved For Future Issuance [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Fair value of common stock Stock Issued During Period, Shares, Issued for Services Common shares issued Class of Warrant or Right, Number of Securities Called by Warrants or Rights Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Arrangements [Axis] Arrangements [Domain] Share-based Compensation [Abstract] Research and Development Expense [Member] General and Administrative Expense [Member] Award Type [Axis] Equity Award [Domain] Plan Name [Axis] Plan Name [Domain] Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights Peter Hoang [Member] Commitments And Contingencies [Table] Mythili Koneru [Member] Lease Arrangement, Type [Axis] Lease Arrangement, Type [Domain] Commitments And Contingencies [Line Items] Annual Base Salary The amount of annual base salary. Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage Consulting Fees represents consulting fees for the period Payment for Sponsored Research Fees Amount paid to Sponsored Research Fee Chief Development Officer [Member] Chief Development Officer Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Research and Development Arrangement, Contract to Perform for Others, Type [Domain] Consulting Arrangements [Member] Related Party [Axis] Related Party [Domain]