Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015		Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net sales	$ 11,755	$ 12,366		$ 23,473	$ 23,996
Cost of goods sold	5,172	5,778		10,241	11,051
Gross profit	6,583	6,588		13,232	12,945
Compensation and benefits:
Salaries, wages and benefits	2,577	2,736		5,080	5,221
Stock-based compensation	3,069	2,418		3,819	12,296
Professional fees and administrative	2,432	3,503		5,189	7,510
Marketing and selling	2,332	2,291		5,215	6,315
Depreciation and amortization	2,357	2,328		4,690	4,624
Severance	18	651		46	651
Total operating expenses	12,785	13,927		24,039	36,617
Loss from operations	(6,202)	(7,339)		(10,807)	(23,672)
Other income (expense):
Warrant fair value adjustment	37,799	87,251		33,583	80,261
Derivative fair value adjustment	154	30,327		409	60,254
Loss on extinguishment of debt		(70,228)		(8,571)	(70,356)
Gain on extinguishment of warrants		17,382		86	49,782
Interest expense	(3,309)	(14,061)	[1]	(6,557)	(53,218)
Debt financing inducement expense					(66,434)
Gain on troubled debt restructuring				59
Settlement of litigation and disputes	(65)			(65)
Total other income (expense)	34,579	50,671		18,944	289
Income before income taxes	28,377	43,332		8,137	(23,383)
Income tax benefit (expense)	81	(192)		(111)	(444)
Net income (loss)	28,458	43,140	[1]	8,026	(23,827)
Other comprehensive income (loss):
Foreign currency translation income (loss)	(2,387)	3,288		(4,124)	769
Comprehensive income (loss)	$ 26,071	$ 46,428		$ 3,902	$ (23,058)
Net income per common share:
Basic (in dollars per share)	$ 0.38	$ 0.70	[1]	$ 0.11	$ (0.59)
Diluted (in dollars per share)	$ 0.28	$ 0.24	[1]	$ 0.08	$ (0.59)
Weighted average number of shares outstanding:
Basic (in shares)	75,454,000	61,696,000	[1]	75,283,000	40,527,000
Diluted (in shares)	104,878,000	180,253,000	[1]	104,493,000	40,527,000

[1] See Note 1, Basis of Presentation, Revision of 2015 Statement of Operations.