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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
	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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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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