Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net loss	$ (20,431)	$ (66,966)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,333	2,296
Deferred income tax benefit	187	(226)
Stock-based compensation	$ 750	9,878
Issuance of common stock for services and cancellation of derivatives		5
Debt financing inducement expense		66,434
Warrant fair value adjustment	$ 4,216	6,989
Derivative fair value adjustment	(255)	(29,928)
Loss on extinguishment and conversion of debt	8,571	128
Gain on extinguishment of warrants	(86)	(32,401)
Amortization of debt discount and issuance costs	$ 546	10,480
Warrants issued for interest		24,445
Decrease (increase) in:
Accounts receivable, net	$ 916	323
Inventories	330	1,598
Prepaid expenses and other	(58)	2,919
Increase (decrease) in accounts payable and accrued expenses	(2,294)	70
Net Cash Used In Operating Activities	(5,275)	(3,956)
Cash Flows from Investing Activities:
Payments for property and equipment	(255)	(30)
Cash Flows from Financing Activities:
Proceeds from debt financings	6,926	6,886
Principal payments under debt financings	$ (719)	(3,533)
Proceeds from exercise of stock options		12
Net Cash Provided By Financing Activities	$ 6,207	3,365
Impact of changes in foreign exchange rates	(417)	(457)
Net increase in cash and equivalents	260	(1,078)
Cash and Equivalents:
Beginning of period	690	2,099
End of period	950	1,021
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	$ 346	$ 28
Cash paid for income taxes
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Fair value of derivatives issued in debt and equity financings		$ 85,250
Settlement and rollover of debt financings, accrued interest and prepayment penalties in new borrowings	$ 2,117