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Significant Accounting Policies - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended |  | 9 Months Ended |  |  | 9 Months Ended |  |  | 9 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  | 9 Months Ended | 0 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 Segment | Sep. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2013 Foreign Exchange Contract | Sep. 30, 2014 Foreign Exchange Contract | Dec. 31, 2013 Foreign Exchange Contract | Sep. 30, 2014 Embedded Derivative Financial Instruments | Sep. 30, 2013 Embedded Derivative Financial Instruments | Dec. 31, 2013 Embedded Derivative Financial Instruments | Dec. 31, 2012 Embedded Derivative Financial Instruments | Sep. 30, 2014 Effect of a hypothetical 10% increase in the market price of common shares | Sep. 30, 2014 Top Three Customers Gross Product Sales | Sep. 30, 2013 Top Three Customers Gross Product Sales | Sep. 30, 2014 Top Three Customers Accounts Receivable | Sep. 30, 2013 Top Three Customers Accounts Receivable | Sep. 30, 2014 Convertible Debt | Sep. 30, 2014 Convertible Debt 2014 Notes | May 31, 2014 Convertible Debt 2014 Notes | Sep. 30, 2014 Convertible Debt 2014 Notes Non Cash Items | Sep. 30, 2014 Convertible Debt 2012 Notes | Dec. 31, 2013 Convertible Debt 2012 Notes | Sep. 30, 2014 Warrants Issued October 2009 | Dec. 31, 2013 Minimum Embedded Derivative Financial Instruments | Sep. 30, 2014 Minimum Embedded Derivative Financial Instruments | Sep. 30, 2014 Maximum | Dec. 31, 2013 Maximum Embedded Derivative Financial Instruments | Sep. 30, 2014 Maximum Embedded Derivative Financial Instruments
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenue | $ 0 |  | $ 0 |  | $ 1,703,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales discount percentage | 2.00% |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales discount term |  |  | 30 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short term highly liquid instruments, maturity date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90 days |  |
Trade receivables, credit period |  |  | 30 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value include debt discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,500,000 | 27,900,000 | 27,900,000 | 29,500,000 | 0 | 700,000 |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95.00% | 96.00% | 96.00% | 98.00% |  |  |  |  |  |  |  |  |  |  |  |
Derivative, amount outstanding |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant derivative liability | 121,000 |  | 121,000 |  | 6,894,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liability fair value assumptions, risk-free rate |  |  | 0.02% |  | 0.12% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.20% |  |  |  |  |  |  |  |  |  |
Derivative liability fair value assumptions, term |  |  | 4 months 24 days |  | 9 months 18 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years 3 months 18 days | 2 years 6 months |  | 6 years 7 months 6 days | 3 years 10 months 24 days
Derivative liability fair value assumptions, dividend yield |  |  | 0.00% |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22.60% |  |  |  |  |  |  |  |  |  |
Derivative liability fair value assumptions, volatility rate |  |  | 123.00% |  | 99.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 83.00% |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in the fair value of warrant derivative liability |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  | 6,800,000 |  |  |  |  |
Gain (loss) on change in fair value of derivative liability | 4,466,000 | (1,402,000) | 11,870,000 | 21,059,000 |  |  | (395,000) |  |  | 5,600,000 | 7,377,000 |  |  |  |  |  |  |  | (1,100,000) | 900,000 |  |  |  |  | 6,300,000 |  |  |  |  |
Compensation expense (income) for change in fair value of warrants issued to former employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |
Market price of common stock | $ 1.09 |  | $ 1.09 |  |  |  |  |  |  |  |  |  |  | $ 1.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hypothetical increase in market price of common shares |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change of control obligation |  |  |  |  |  |  |  |  |  |  |  |  | 140,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum repayment of future revenue and receivables |  |  |  |  |  |  |  |  |  |  |  |  | 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liability fair value assumption, coupon rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9.90% | 9.80% |  | 12.50% | 10.80%
Derivative liability fair value assumptions, market yields |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9.00% | 8.90% |  | 29.40% | 17.20%
Long term debt redemption feature |  |  |  |  |  | 14,600,000 |  |  |  | 4,600,000 |  | 11,100,000 |  |  |  |  |  |  |  | 4,400,000 |  |  |  |  |  |  |  |  |  |
Gain (loss) on change in fair value of derivative liability |  |  |  |  |  |  |  |  |  | $ 6,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of operating segments |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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