Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable, Current Accounts payable Accrued Employee Benefits, Current Accrued employee-related costs Accrued Liabilities, Current Accrued liabilities Total accrued liabilities Accrued Professional Fees, Current Accrued professional fees Accrued research and development costs current. Accrued Research And Development Costs Current Accrued research and development costs Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation Additional payments that could be due by the Company upon achievement of certain milestones. Additional Milestone Payment Additional milestone payment payable Additional Paid in Capital, Common Stock Additional paid-in capital Additional Paid-in Capital [Member] Additional Paid-In Capital [Member] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Issuance of common stock in connection with initial public offering, issuance costs Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Aggregate amount of payments that could be due by the Company upon achievement of certain milestones. Aggregate Amount Of Milestone Payment Aggregate milestone payment Allocated Share-based Compensation Expense Total stock-based compensation Amendment Flag Amendment Flag Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Outstanding options to purchase common stock Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Assets TOTAL ASSETS Assets [Abstract] ASSETS Assets, Current Total current assets Assets, Current [Abstract] CURRENT ASSETS: Assets, Fair Value Disclosure [Abstract] Financial Assets Assets, Fair Value Disclosure, Recurring Total financial assets Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Capital Expenditures Incurred but Not yet Paid Property and equipment purchases included in accrued liabilities An arrangement, in which the entity has agreed to expend funds for the in-licensing of certain technologies. Carna License Agreement [Member] Carna License Agreement [Member] Cash Cash Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Total cash and cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents CASH, CASH EQUIVALENTS AND RESTRICTED CASH - End of period CASH, CASH EQUIVALENTS AND RESTRICTED CASH - Beginning of period Total cash, cash equivalents and restricted cash shown in the condensed consolidated statement of cash flows Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH Cash Equivalents, at Carrying Value [Abstract] Cash equivalents: Class of Stock [Line Items] Class of Stock [Line Items] Milestone payment payable upon the transfer of clinical trials. Clinical Trial Transfer Milestone Payment Aggregate milestone payment Commitments and Contingencies Commitments and Contingencies (Note 6) Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Common Stock, Capital Shares Reserved for Future Issuance Number of common stock shares reserved for issuance Total common stock reserved for future issuance Common Stock [Member] Common Stock [Member] Common Stock, Par or Stated Value Per Share Common stock, 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 Common Stock, Value, Issued Common stock, $0.001 par value; 500,000,000 shares authorized as of March 31, 2018 and December 31, 2017; 74,309,681 and 52,395,223 shares issued and outstanding as of March 31, 2018 and December 31, 2017 Comprehensive Income, Policy [Policy Text Block] Comprehensive Loss Computer Equipment [Member] Computer Equipment [Member] Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentrations of Credit Risk Contract Termination [Member] Contract Termination [Member] An arrangement, in which the entity has agreed to expend funds for the in-licensing of certain technologies. CPF License Agreements [Member] CPF License Agreements [Member] Current Fiscal Year End Date Current Fiscal Year End Date Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Summary of Prepaid Expenses and Other Current Assets Depreciation, Depletion and Amortization Depreciation Depreciation related to property and equipment Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share, Basic and Diluted Net loss per common share, basic and diluted Earnings Per Share [Text Block] Net Loss Per Share Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Federal statutory rate Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Weighted-average period Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Total unrecognized stock-based compensation related to unvested stock options Employee Stock Option [Member] Options to Purchase Common Stock [Member] Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] 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] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets, Level 1 to Level 2 Transfers, Amount Fair Value, Assets, Level 1 to Level 2 Transfers, Amount Fair Value, Assets, Level 2 to Level 1 Transfers, Amount Fair Value, Assets, Level 2 to Level 1 Transfers, Amount Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of Fair Value of Financial Assets Measured on Recurring Basis Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements Fair Value, Inputs, Level 1 [Member] Level 1 [Member] Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments Federal Income Tax Expense (Benefit), Continuing Operations Provision for federal income taxes Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign Currency Foreign Income Tax Expense (Benefit), Continuing Operations Income tax expense for foreign taxes Furniture and Fixtures [Member] Furniture and Fixtures [Member] General and Administrative Expense General and administrative General and Administrative Expense [Member] General and administrative [Member] Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before provision for income taxes Income Statement [Abstract] Income Statement [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Taxes Income Taxes Paid, Net Cash paid for income taxes Income Tax Expense (Benefit) Provision for income taxes Income Tax, Policy [Policy Text Block] Income Taxes Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accrued Liabilities Accrued liabilities Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Lease Agreements [Member] Lease Agreements [Member] Lease Arrangement, Type [Axis] Lease Arrangement, Type [Axis] Lease Arrangement, Type [Domain] Lease Arrangement, Type [Domain] Lease Expiration Date Operating lease agreement expiration date Leasehold Improvements [Member] Leasehold Improvements [Member] Lessee, Operating Lease, Renewal Term Additional lease term to be extended Liabilities TOTAL LIABILITIES Liabilities and Equity TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current Total current liabilities Liabilities, Current [Abstract] CURRENT LIABILITIES: Loss Contingencies [Line Items] Loss Contingencies [Line Items] Loss Contingencies [Table] Loss Contingencies [Table] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Money Market Funds, at Carrying Value Money market accounts Money Market Funds [Member] Money Market Funds [Member] Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Income (Loss) Attributable to Parent Net loss Net loss New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Noncash Investing and Financing Items [Abstract] SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING INFORMATION: Number Of Milestone Payments Number Of Milestone Payments Number of milestone payments recorded Number of Operating Segments Number of operating segment Operating Expenses Total operating expenses Operating Expenses [Abstract] Operating expenses: Operating Income (Loss) Loss from operations Operating Lease Agreement To Lease Office Space [Member] Operating Lease Agreement To Lease Office Space [Member] Operating Lease Agreement To Lease Office Space [Member] Operating Lease Agreement To Sublease Office Space [Member] Operating Lease Agreement To Sublease Office Space [Member] Operating Lease Agreement To Sublease Office Space [Member] Operating Leases, Future Minimum Payments Due Total Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals Minimum future sublease rentals Operating Leases, Future Minimum Payments, Due in Five Years 2022 Operating Leases, Future Minimum Payments, Due in Four Years 2021 Operating Leases, Future Minimum Payments, Due in Three Years 2020 Operating Leases, Future Minimum Payments, Due in Two Years 2019 Operating Leases, Future Minimum Payments, Due Thereafter Thereafter Operating Leases, Future Minimum Payments, Remainder of Fiscal Year Remainder of 2018 Operating Leases, Rent Expense, Net Total rent expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] The Company and Basis of Presentation Other Accrued Liabilities, Current Other Other Assets, Current Other Other Assets, Noncurrent Other assets Other Assets Policy Policy [Text Block] Other Assets Policy [Policy Text Block] Other Assets Other Noncash Income (Expense) Other Other Nonoperating Income (Expense) Other income Other Receivables, Net, Current Other receivables Payables and Accruals [Abstract] Payables and Accruals [Abstract] Payments for Restructuring Cash payments Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] PNT2258. PNT2258 [Member] PNT2258 [Member] Preferred Stock, Par or Stated Value Per Share Preferred stock, par value Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Preferred Stock, Value, Issued Preferred stock, $0.001 par value; 10,000,000 shares authorized as of March 31, 2018 and December 31, 2017; nil shares issued and outstanding as of March 31, 2018 and December 31, 2017 Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Total prepaid expenses and other current assets Prepaid Insurance Prepaid insurance Prepaid research and development expenses. Prepaid Research And Development Expenses Prepaid research and development project costs Proceeds from Issuance of Common Stock Proceeds from issuance of common stock upon follow-on offering, net of offering costs Proceeds from issuance of common stock net of issuance costs. Proceeds From Issuance Of Common Stock Net Of Issuance Costs Proceeds from issuance of common stock, net of deferred financing costs Proceeds from Stock Options Exercised Proceeds from exercise of common stock options Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Gross Property and equipment, gross Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Net Property and equipment, net Total property and equipment, net Property Plant And Equipment Other Than Leasehold Improvement[Member] Property Plant And Equipment Other Than Leasehold Improvement[Member] Property Plant and Equipment Other than Leasehold Improvement [Member] Property, Plant and Equipment, Policy [Policy Text Block] Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Summary of Property and Equipment, Net Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Useful Life Estimated useful lives of assets Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-term Commitment [Domain] Purchase Commitment, Excluding Long-term Commitment [Domain] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Research and Development Expense Research and development Research and Development Expense [Member] Research and development [Member] Research and Development Expense, Policy [Policy Text Block] Research and Development Costs Restricted Cash and Cash Equivalents Restricted cash included in other assets Restricted deposit expiration date. Restricted Deposit Expiration Date Restricted deposit expiration date Restricted money market funds. Restricted Money Market Funds [Member] Restricted Money Market Funds [Member] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Restructuring and Related Activities Disclosure [Text Block] Restructuring Costs Restructuring Type [Axis] Restructuring Type [Axis] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Plan [Axis] Restructuring Plan [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] Restructuring Reserve, Current Accrual, Ending balance Accrual, Beginning balance Accrued restructuring costs Retained Earnings (Accumulated Deficit) Accumulated deficit Retained Earnings [Member] Accumulated Deficit [Member] Sale of Stock [Domain] Sale of Stock [Domain] San Francisco [Member] San Francisco [Member] San Francisco [Member] Schedule of Accrued Liabilities [Table Text Block] Summary of Accrued Liabilities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Cash and Cash Equivalents [Table Text Block] Summary of Cash and Cash Equivalents Schedule of cash cash equivalents and restricted cash. Schedule of Cash Cash Equivalents and Restricted Cash [Table Text Block] Summary of Reconciliation of Cash, Cash Equivalents and Restricted Cash Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of Stock-based Compensation Expense for Employees and Non-employees Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Aggregate Future Non-Cancelable Minimum Lease Payments Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring and Related Costs [Table Text Block] Summary of Restructuring Activities Share-based Compensation, Activity [Table Text Block] Summary of Stock-Based Compensation Activity Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Estimated Grant-date Fair Values of Stock-based Awards Using Black-Scholes Option Pricing Model Assumptions Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table Text Block] Schedule of Common Stock Reserved for Issuance Geographical [Domain] Geographical [Domain] Segment Reporting, Policy [Policy Text Block] Segment Information Share-based Compensation Stock-based compensation Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] Options Outstanding, Shares Available for Grant Share-based Compensation Arrangement by Share-based Payment Award, Description Stock option grants description Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date Options to purchase shares of common stock, discount percentage Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Stock option life in years Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected dividend rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected volatility, Maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility, Minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Risk-free interest rate, Maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, Minimum Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Common shares authorized to be issued during the period Shares Available for Grant, Awards authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Shares Available for Grant, Ending balance Shares Available for Grant, Beginning balance Share based compensation arrangement by share based payment award number of shares available for grant exercised in period. Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Exercised In Period Shares Available for Grant, Exercised Share based compensation arrangement by share based payment award number of shares available for grant forfeitures in period. Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Forfeitures In Period Shares Available for Grant, forfeited/cancelled Share based compensation arrangement by share based payment award number of shares available for grant granted in period. Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Granted In Period Shares Available for Grant, Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Aggregate Intrinsic Value of Outstanding Options, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Number of Shares Outstanding, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Weighted-Average Remaining Contractual Term (Year), Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Aggregate intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Number of Shares Outstanding, Options forfeited/cancelled Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Number of Shares Outstanding, Options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted-average grant date fair values of options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate Intrinsic Value of Outstanding Options Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value [Abstract] Options Outstanding, Aggregate Intrinsic Value of Outstanding Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of Shares Outstanding, Ending balance Number of Shares Outstanding, Beginning balance Outstanding stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Options Outstanding, Number of Shares Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Ending balance Weighted-Average Exercise Price Per Share, Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Options Outstanding, Weighted-Average Exercise Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted-Average Remaining Contractual Term (Years) Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Term [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Term [Abstract] Options Outstanding, Weighted-Average Remaining Contractual Term (Years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Aggregate Intrinsic Value of Outstanding Options, Vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Number of Shares Outstanding, Vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Vested and expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted-Average Remaining Contractual Term (Year), Vested and expected to vest Share Based Compensation Arrangement By Share Based Payment Award Options Vested Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Options Vested Grant Date Fair Value Total grant date fair value of options vested Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum Percentage threshold of outstanding shares increased annually under the plan Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Number of common stock issued Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Options exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Options forfeited/cancelled Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted-Average Exercise Price Per Share, Options granted Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Stock-Based Compensation Shares Issued, Price Per Share Shares issued, price per share Shares, Outstanding Stockholders Equity, Ending Balance, Shares Stockholders Equity, Beginning Balance, Shares Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Software Development [Member] Software [Member] Equity Components [Axis] Equity Components [Axis] Geographical [Axis] Geographical [Axis] Statement [Line Items] Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Stockholders' Equity Attributable to Parent Stockholders Equity, Ending Balance Stockholders Equity, Beginning Balance TOTAL STOCKHOLDERS' EQUITY Stockholders' Equity Attributable to Parent [Abstract] STOCKHOLDERS' EQUITY: Stockholders' Equity Note Disclosure [Text Block] Common Stock Reserved for Issuance Stock issuance costs incurred but not yet paid. Stock Issuance Costs Incurred But Not Yet Paid Offering costs included in accrued liabilities Stock Issued During Period, Shares, New Issues Issuance of stock, shares Stock issued, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Issuance of common stock for exercise of stock options, Shares Number of Shares Outstanding, Options exercised Stock Issued During Period, Value, New Issues Issuance of stock, value Stock Issued During Period, Value, Stock Options Exercised Issuance of common stock for exercise of stock options Sale of Stock [Axis] Sale of Stock [Axis] Summary Of Significant Accounting Policy [Line Items] Summary Of Significant Accounting Policy [Line Items] Summary Of Significant Accounting Policy [Line Items] Summary Of Significant Accounting Policy [Table] Summary Of Significant Accounting Policy [Table] Summary Of Significant Accounting Policy [Table] Supplemental Balance Sheet Disclosures [Text Block] Balance Sheet Components Supplemental Cash Flow Information [Abstract] SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: Tax cuts and jobs act of 2017 change in tax rate deferred tax assets. Tax cuts and jobs act of 2017 change in tax rate deferred tax assets Decrease of net deferred tax assets Trading Symbol Trading Symbol Two Thousand And Fifteen Employee Stock Purchase Plan [Member] Two Thousand And Fifteen Employee Stock Purchase Plan [Member] 2015 Employee Stock Purchase Plan [Member] Two Thousand And Fifteen Equity Incentive Plan [Member] Two Thousand And Fifteen Equity Incentive Plan [Member] 2015 Plan [Member] Two Thousand Eight and Two Thousand Fifteen Equity Incentive Plans [Member] Two Thousand Eight And Two Thousand Fifteen Equity Incentive Plans [Member] 2008 Plan and 2015 Plan [Member] Type of Restructuring [Domain] Type of Restructuring [Domain] Underwriting discounts and commissions and offering expenses. Underwriting Discounts And Commissions And Offering Expenses Underwriting discounts and commissions and offering expenses Underwritten public offering. Underwritten Public Offering [Member] Follow on Offering [Member] Upfront license payment. Upfront License Payment Upfront payment paid Use of Estimates, Policy [Policy Text Block] Use of Estimates Vancouver Lease [Member] Vancouver Lease [Member] Vancouver Lease [Member] Vancouver [Member] Vancouver [Member] Vancouver [Member] Weighted Average Number of Shares Outstanding, Basic and Diluted Weighted-average shares used in computing net loss per common share, basic and diluted