Document and Entity Information Statement [Table] Statement [Line Items] New Jersey Tax Benefits Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Current Reporting Status Entity Filer Category Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus CONDENSED CONSOLIDATED BALANCE SHEETS Assets [Abstract] ASSETS Assets, Current [Abstract] Current Assets: Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents at End of Period Cash and Cash Equivalents at Beginning of Period Cash and Cash Equivalents Available-for-sale Securities, Debt Securities, Current Marketable Securities Fair Value Accounts and Other Receivables, Net, Current Accounts and Other Receivables Accounts receivable Prepaid Expense and Other Assets, Current Prepaid and Other Current Assets Assets, Current Total Current Assets Property, Plant and Equipment, Net Property and Equipment, Net Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net Net carrying amount of total intangible assets, net Other Assets, Noncurrent Other Assets Goodwill Goodwill at the end of the period Goodwill at the beginning of the period Goodwill Assets Total Assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current Liabilities: Accounts Payable, Current Accounts Payable Accrued Liabilities, Current Accrued Expenses Other Liabilities, Current Less Current Portion Current Portion of Long-Term Liabilities Liabilities, Current Total Current Liabilities Other Liabilities, Noncurrent Other Long-Term Liabilities Long-Term Portion Liabilities Total Liabilities Commitments and Contingencies. Commitments and Contingent Liabilities Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity: Preferred Stock, Value, Issued Convertible Preferred Stock, $.01 Par Value; 3,000,000 Shares Authorized; No Shares Issued and Outstanding at March 31, 2018 and December 31, 2017 Common Stock, Value, Issued Common Stock, $.001 Par Value; 297,000,000 Shares Authorized; 143,368,784 and 138,520,404 Shares Issued and Outstanding at March 31, 2018 and December 31, 2017, Respectively Additional Paid in Capital, Common Stock Additional Paid-In Capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income Retained Earnings (Accumulated Deficit) Accumulated Deficit StockholdersEquity Period End Balance Period Start Balance Total Stockholders' Equity Liabilities and Equity Total Liabilities and Stockholders' Equity Preferred Stock, Par or Stated Value Per Share Convertible Preferred Stock, Par Value (in dollars per share) Preferred Stock, Shares Authorized Convertible Preferred Stock, Shares Authorized Preferred Stock, Shares Issued Convertible Preferred Stock, Shares Issued Preferred Stock, Shares Outstanding Convertible Preferred Stock, Shares Outstanding Common Stock, Par or Stated Value Per Share Common Stock, Par Value (in dollars 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 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Revenues [Abstract] REVENUES: Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Revenue from Contract with Customer, Excluding Assessed Tax Total Revenues Revenues Costs and Expenses [Abstract] OPERATING EXPENSES: Research and Development Expense Research and Development General and Administrative Expense General and Administrative Goodwill, Impairment Loss Goodwill Impairment Goodwill Impairment Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Impairment Intangible Asset Impairment Non-cash impairment charges of intangible assets Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Gain (loss) on fair value remeasurment contingent consideration (Gain)/Loss on Fair Value Remeasurement of Contingent Consideration Fair value adjustments included in operating expenses Amortization of Intangible Assets Amortization of Acquired Intangible Assets Amortization of Intangible Assets Costs and Expenses Total Operating Expenses Operating Income (Loss) Operating Loss Interest and Other Income Investment and Other Income, Net Investment and other income Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net Loss Before Income Tax Benefit Income Tax Expense (Benefit) Income Tax Benefit Income tax expense (benefit) Non-Cash Income Tax Benefit Net Income (Loss) Available to Common Stockholders, Basic Net Loss Net Loss Earnings Per Share, Basic and Diluted Basic and Diluted Net Loss Per Common Share (in dollars per share) Weighted Average Number of Shares Outstanding, Basic and Diluted Shares Used in Calculating Basic and Diluted Net Loss per Share (in shares) Accumulated Other Comprehensive Income COMPREHENSIVE LOSS: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other Comprehensive Income (Loss): Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized Gain (Loss) on Marketable Securities Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Loss CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash Flows From Operating Activities: 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: Depreciation, Depletion and Amortization Depreciation and Amortization Accretion (Amortization) of Discounts and Premiums, Investments Amortization and Premium of Marketable Securities, Net Gain (Loss) on Disposition of Property Plant Equipment Loss on Sale or Disposal of Assets Share-based Compensation Stock-Based Compensation Expense Increase (Decrease) in Operating Capital [Abstract] Changes in Operating Assets and Liabilities: Increase (Decrease) in Accounts and Other Receivables Accounts and Other Receivables Increase (Decrease) in Prepaid Expense and Other Assets Prepaid and Other Current Assets Increase (Decrease) in Other Operating Assets Other Assets Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Expenses Increase (Decrease) in Other Operating Liabilities Other Liabilities Net Cash Provided by (Used in) Operating Activities Net cash used in operations Net Cash Used in Operating Activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash Flows From Investing Activities: Proceeds from Sale and Maturity of Marketable Securities Sales and Maturities of Marketable Securities Payments to Acquire Marketable Securities Purchases of Marketable Securities Payments to Acquire Property, Plant, and Equipment Acquisition of Property and Equipment Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net Cash Provided by Investing Activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash Flows From Financing Activities: Proceeds from Issuance of Common Stock Net proceeds from sale of common stock Net Proceeds from Stock Issuances Proceeds from Stock Plans Proceeds from Issuance of Stock from Employee Benefit Plans Net Cash Provided by (Used in) Financing Activities Net Cash Provided by Financing Activities Cash and Cash Equivalents, Period Increase (Decrease) Net (Decrease) Increase in Cash and Cash Equivalents Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash Investing Activities Construction in Progress Expenditures Incurred but Not yet Paid Accrued construction in progress Supplemental Cash Flow Information [Abstract] Non-cash Supplemental Disclosure Represents the value of shares issued to certain executive for settlement in lieu of cash payments. Shares Issued To Former Kolltan Executive For Settlement of Severance Shares issued to former Kolltan executive for settlement of severance Basis of Presentation Basis of Accounting [Text Block] Basis of Presentation Subsequent Events Subsequent Events [Text Block] Subsequent Events Significant Accounting Policies Significant Accounting Policies [Text Block] Significant Accounting Policies Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurements Marketable Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Marketable Securities Intangible Assets and Goodwill Goodwill and Intangible Assets Disclosure [Text Block] Intangible Assets and Goodwill Other Long-Term Liabilities Other Liabilities Disclosure [Text Block] Other Long-Term Liabilities Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Stockholders' Equity Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Comprehensive Income (Loss) Note [Text Block] Accumulated Other Comprehensive Income n/a Revenue The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. Revenue from Contract with Customer [Text Block] Revenue Income Taxes Income Tax Disclosure [Text Block] Income Taxes Net Loss Per Share Earnings Per Share [Text Block] Net Loss Per Share Disclosure of accounting policy pertaining to newly-adopted accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. Newly Adopted Accounting Pronouncements, Policy [Policy Text Block] Newly Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of financial assets and liabilities subject to fair value measurements Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block] Schedule of the Company's contingent consideration liabilities measured at fair value using Level 3 inputs Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Summary of marketable securities, classified as available-for-sale Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of finite-lived intangible assets subject to amortization and indefinite-lived assets Schedule of Goodwill [Table Text Block] Schedule of changes in the carrying amount of goodwill Tabular disclosure of other long-term liabilities, not separately disclosed on the balance sheet. Schedule of Other Long Term Liabilities [Table Text Block] Schedule of other long-term liabilities Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of stock option activity Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of stock-based compensation expense Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of assumptions used for the fair value of employee stock options granted Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Summary of changes in accumulated other comprehensive income Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of potentially dilutive common shares that have not been included in the net loss per common share calculations because the effect would have been anti-dilutive Investments and Cash Cash, cash equivalents and marketable securities Subsequent Event [Table] Subsequent Event [Line Items] Subsequent Events Restructuring charges Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Fair Value Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value Measurements Recurring [Member] Fair Value Measurements Fair Value, Hierarchy [Axis] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value Inputs Level2 [Member] Level 2 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair value measurements Assets: Cash and Cash Equivalents, Fair Value Disclosure Money market funds and cash equivalents Available-for-sale Securities Marketable securities Assets, Fair Value Disclosure Total financial assets at fair value Liabilities: Contingent Consideration Classified as Equity, Fair Value Disclosure Balance at end of period Balance at beginning of period Kolltan acquisition contingent consideration Financial and Nonfinancial Liabilities, Fair Value Disclosure Total financial liabilities at fair value Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Roll-forward of acquisition-related contingent consideration Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Milestone payments Fair Value, Assets, Level 1 to Level 2 Transfers, Amount Assets level 1 to level 2 transfers Fair Value, Assets, Level 2 to Level 1 Transfers, Amount Assets level 2 to level 1 transfers Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount Liabilities level 1 to level 2 transfers Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount Liabilities level 2 to level 1 transfers Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Asset transfer out of level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Asset transfer into level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Liabilities transfers out of level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Liabilities transfers into level 3 Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types Of Debt And Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Corporate Debt Securities [Member] Corporate debt securities Schedule of Available-for-sale Securities [Line Items] Marketable Securities Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Amortized Cost Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Maturing in one year or less Available-for-sale Debt Securities, Amortized Cost Basis Amortized cost Available-for-sale Securities, Gross Unrealized Gain [Abstract] Gross Unrealized Gains Represents the gross unrealized gains on securities, at a point in time, for those securities which are expected to mature within one year of the balance sheet date, and which are categorized neither as held-to-maturity nor as trading securities. Available For Sale Securities, Debt Maturities within One Year Gross Unrealized Gain Maturing in one year or less AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax Gross Unrealized Gains Available For Sale Securities, Gross Unrealized Losses [Abstract] Gross Unrealized Losses Represents the gross unrealized losses on securities, at a point in time, which are expected to mature within one year of the balance sheet date, and which are categorized neither as held-to-maturity nor as trading securities. Available For Sale Securities, Debt Maturities within One Year, Gross Unrealized Losses Maturing in one year or less AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax Gross Unrealized Losses Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Fair Value Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Maturing in one year or less Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Other-than-temporarily impairment Interest Receivable Accrued interest Disclosure of the carrying value of purchased amortizable finite-lived intangible assets, including disclosure of the carrying value of indefinite-lived intangible assets not subject to amortization, excluding goodwill, in total and by major class. Finite Lived and Indefinite Lived Intangible Assets by Major Class [Table] No definition available. Finite Lived and Indefinite Lived Intangible Assets by Major Class [Line Items] Intangible Assets and Goodwill Finite-lived intangible asset Finite-Lived Intangible Asset, Useful Life Estimated Life Finite-Lived Intangible Assets, Gross Gross carrying amount finite-lived Finite-Lived Intangible Assets, Accumulated Amortization Accumulated Amortization Finite-Lived Intangible Assets, Net Net carrying amount finite-lived Indefinite-lived intangible assets: Indefinite-Lived Intangible Assets (Excluding Goodwill) Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill), Fair Value Disclosure Net carrying amount of indefinite-lived