Entity Central Index Key Document And Entity Information [Abstract] 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 Change in fair value of contingent consideration. Issuance costs for warrants. Restructuring and other charges. Income Statement [Abstract] Revenue Revenues Cost of revenue Cost Of Revenue Gross (loss) profit Gross Profit Operating Expenses Costs And Expenses [Abstract] Research and development Research And Development Expense Sales and marketing Selling And Marketing Expense General and administrative General And Administrative Expense Amortization of intangible assets Amortization Of Intangible Assets Change in fair value of contingent consideration Change In Fair Value Of Contingent Consideration Change in fair value of warrant liabilities Fair Value Adjustment Of Warrants Issuance costs for warrants Issuance Costs For Warrants Inventory write-down related to restructuring Inventory Write Down Restructuring and other charges Restructuring And Other Charges Goodwill impairment Goodwill Impairment Loss Total Operating Expenses Operating Costs And Expenses Operating Loss Operating Income Loss Other Expense Nonoperating Income Expense [Abstract] Interest expense, net Interest Expense Other (expense) income Other Nonoperating Income Expense Total Other Expense, net Nonoperating Income Expense Loss before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax benefit Income Tax Expense Benefit Net loss Net Income Loss Other comprehensive income Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Foreign currency translation gain Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Comprehensive loss Comprehensive Income Net Of Tax Net loss per share - basic and diluted Earnings Per Share Basic And Diluted Weighted average common shares outstanding - basic and diluted Weighted Average Number Of Share Outstanding Basic And Diluted Warrant liability. Statement Of Partners Capital [Abstract] Statement [Table] Statement [Table] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Intellectual Property, Net [Member] Intellectual Property [Member] In-Process Research and Development [Member] In Process Research And Development [Member] Statement [Line Items] Statement [Line Items] Assets Assets [Abstract] Current Assets Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable, net Accounts Receivable Net Current Inventories Inventory Net Interest receivable Interest Receivable Current Other current assets Other Assets Current Total Current Assets Assets Current Restricted cash Restricted Cash And Cash Equivalents Noncurrent Accounts receivable, net of current portion Accounts Receivable Net Noncurrent Property and equipment, net Property Plant And Equipment Net Intangible assets Finite Lived Intangible Assets Net Goodwill Goodwill Other long term assets Other Assets Noncurrent Total Assets Assets Liabilities and Stockholders’ Equity Liabilities And Stockholders Equity [Abstract] Current Liabilities Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued expenses Accrued Liabilities Current Contingent consideration – current portion Business Combination Contingent Consideration Liability Current Notes payable - current portion, net of debt discount Notes Payable Current Total Current Liabilities Liabilities Current Long Term Liabilities Liabilities Noncurrent [Abstract] Contingent consideration – less current portion Business Combination Contingent Consideration Liability Noncurrent Notes payable - less current portion, net of debt discount Long Term Notes Payable Warrant liabilities Warrant Liability Net deferred tax liabilities Deferred Tax Liabilities Noncurrent Total Liabilities Liabilities Commitments and Contingencies Commitments And Contingencies Stockholders’ Equity Stockholders Equity [Abstract] Common stock $0.001 par value, 750,000,000 shares authorized at September 30, 2017, and December 31, 2016; 155,283,207 and 115,781,030 shares issued at September 30, 2017 and December 31, 2016, respectively; and 155,281,071 and 115,687,351 shares outstanding at September 30, 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 Treasury stock at cost, 2,136 and 93,679 shares at September 30, 2017 and December 31, 2016, respectively Treasury Stock Value Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income Loss Net Of Tax Total Stockholders’ Equity Stockholders Equity Total Liabilities and Stockholders’ Equity Liabilities And Stockholders Equity 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 Treasury stock, shares Treasury Stock Shares Adjustments to additional paid in capital non-employee warrant awards. Issuance of common stock and treasury stock shares for cash net of issuance costs. Issuance of common stock and treasury stock net of issuance costs. Stock issued during period shares stock options and warrants exercised. Stock issued during period value stock options and warrants exercised. Restricted stock shares net of shares for tax withholdings. Stock issued during period shares in exchange for contingent consideration. Stock issued during period in exchange for contingent consideration. Statement Of Stockholders Equity [Abstract] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Treasury Stock [Member] Treasury Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Accumulated Deficit [Member] Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Income [Member] Accumulated Other Comprehensive Income [Member] Balance Balance, Shares Shares Outstanding Stock-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Non-employee warrant awards Adjustments To Additional Paid In Capital Non Employee Warrant Awards Issuance of common stock and treasury stock, net of issuance costs Issuance Of Common Stock And Treasury Stock Net Of Issuance Costs Issuance of common stock and treasury stock, net of issuance costs, Shares Issuance Of Common Stock And Treasury Stock Shares For Cash Net Of Issuance Costs Exercise of stock options and warrants Stock Issued During Period Value Stock Options And Warrants Exercised Exercise of stock options and warrants, Shares Stock Issued During Period Shares Stock Options And Warrants Exercised Award of restricted stock units Stock Issued During Period Value Restricted Stock Award Gross Award of restricted stock units, Shares Stock Issued During Period Shares Restricted Stock Award Gross Return of common stock to pay withholding taxes on restricted stock Adjustments Related To Tax Withholding For Share Based Compensation Return of common stock to pay withholding taxes on restricted stock, Shares Restricted Stock Shares Net Of Shares For Tax Withholdings Issuance of common stock in exchange for contingent consideration Stock Issued During Period In Exchange For Contingent Consideration Issuance of common stock in exchange for contingent consideration, Shares Stock Issued During Period Shares In Exchange For Contingent Consideration Relative fair value of warrants issued with debt Adjustments To Additional Paid In Capital Warrant Issued Other comprehensive income Other Comprehensive Income Loss Net Of Tax Net loss Balance Balance, Shares Non-employee warrant awards. Payments to acquire intellectual property. Proceeds from issuance of debt and warrants net of issuance costs. Proceeds from issuance of common stock and warrants. Transfer of inventory to property and equipment. Conversion of contingent consideration to common stock. Reclassification of warrant liability to common stock and additional paid in capital. Statement Of Cash Flows [Abstract] Operating Activities Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation Depreciation And Amortization Amortization of debt discount and debt issuance costs Amortization Of Financing Costs And Discounts Stock-based compensation Share Based Compensation Non-employee warrant awards Non Employee Warrant Awards Common stock issued for services Issuance Of Stock And Warrants For Services Or Claims Non-cash restructuring and other charges Restructuring Reserve Settled Without Cash2 Deferred tax benefit Deferred Income Tax Expense Benefit Loss on extinguishment of debt Gains Losses On Extinguishment Of Debt Changes in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Accounts receivable Increase Decrease In Accounts Receivable Interest receivable Increase Decrease In Interest And Dividends Receivable Inventories Increase Decrease In Inventories Other current and long term assets Increase Decrease In Other Operating Assets Accounts payable Increase Decrease In Accounts Payable Accrued expenses Increase Decrease In Accrued Liabilities Net cash and cash equivalents used in operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Investing Activities Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Purchase of property and equipment Payments To Acquire Property Plant And Equipment Purchase of intellectual property Payments To Acquire Intellectual Property Net cash and cash equivalents used in investing activities Net Cash Provided By Used In Investing Activities Continuing Operations Financing Activities Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Payment of debt Repayments Of Short Term Debt Proceeds from issuance of debt and warrants, net of issuance costs Proceeds From Issuance Of Debt And Warrants Net Of Issuance Costs Payment of contingent consideration Payment For Contingent Consideration Liability Financing Activities Proceeds from issuance of common stock and warrants, net of issuance costs Proceeds From Issuance Of Common Stock And Warrants Taxes paid related to net share settlement of vesting of restricted stock units Payments Related To Tax Withholding For Share Based Compensation Proceeds from exercise of stock options and warrants Proceeds From Stock Options Exercised Net cash and cash equivalents 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 Net (decrease) increase in cash, cash equivalents and restricted cash Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash, cash equivalents and restricted cash, beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Cash, cash equivalents and restricted cash, end of period Supplemental Disclosure for Cash Flow Information Supplemental Cash Flow Elements [Abstract] Interest paid Interest Paid Supplemental Schedule of Noncash Investing Activities Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Transfer of inventory to property and equipment Transfer Of Inventory To Property And Equipment Issuance of common stock as contingent consideration Conversion Of Contingent Consideration To Common Stock Reclass of warrant liability to common stock and additional paid in capital Reclassification Of Warrant Liability To Common Stock And Additional Paid In Capital Accounting Policies [Abstract] Organization and Capitalization Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Business Combinations [Abstract] Acquisition of Senhance Surgical Robotic System Business Combination Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Fair Value Disclosures [Text Block] Receivables [Abstract] Accounts Receivable, Net Loans Notes Trade And Other Receivables Disclosure [Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] Other Current Assets Other Current Assets [Text Block] Property Plant And Equipment [Abstract] Property and Equipment Property Plant And Equipment Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Goodwill, In-Process Research and Development and Intellectual Property Goodwill And Intangible Assets Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Accrued liabilities. Accrued Liabilities Current [Abstract] Accrued Expenses Accrued Liabilities [Text Block] Debt Disclosure [Abstract] Notes Payable Debt Disclosure [Text Block] The entire disclosure of warrants. Text Block [Abstract] Warrants Warrants Disclosure [Text Block] Restructuring And Related Activities [Abstract] Restructuring Restructuring And Related Activities Disclosure [Text Block] Purchase agreement, controlled equity offering and public offering of common stock. Equity Line Financing, Controlled Equity Offering and Public Offering of Common Stock Purchase Agreement Controlled Equity Offering And Public Offering Of Common Stock [Text Block] Earnings Per Share [Abstract] Basic and Diluted Net Loss per Share Earnings Per Share [Text Block] Related Party Transactions [Abstract] Related Person Transactions Related Party Transactions Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Basis of Presentation Basis Of Accounting Policy Policy [Text Block] Use of Estimates Use Of Estimates Cash and Cash Equivalents and Restricted Cash Cash And Cash Equivalents Restricted Cash And Cash Equivalents Policy Fair Value of Financial Instruments Fair Value Of Financial Instruments Policy Concentrations and Credit Risk Concentration Risk Credit Risk Accounts Receivable Receivables Policy [Text Block]