Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash flow from operating activities:
Net loss	$ (10,576)	$ (26,627)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	2,548	3,956
Amortization	1,515	2,593
Provision for doubtful accounts receivable	185	251
Share-based compensation, employees and directors	898	729
Interest accreted	455	7,058
Change in fair value of derivative warrant and conversion liabilities	(1,001)	1,209
Loss on extinguishment	1,904	906
Financing expense	0	2,072
Deferred tax benefit	(192)	(1,304)
Other	75	169
Changes in operating assets and liabilities:
Accounts receivable	63	(766)
Inventories	(677)	(138)
Accounts payable and accrued expenses	1,392	(215)
Other	(383)	40
Net cash used in operating activities	(3,794)	(10,067)
Cash flows from investing activities:
Acquisition of HN, net of cash acquired	0	(725)
Purchases of property	(1,068)	(5,423)
Proceeds from sales of property	0	23
Net cash used in investing activities	(1,068)	(6,125)
Cash flows from financing activities:
Payments of debt	(23,823)	(18,971)
Proceeds from issuance of debt	25,991	15,699
Proceeds from issuance of convertible debt and related warrants, net of costs	0	5,379
Proceeds from issuance of common stock and warrants, net of costs	0	13,296
Other	0	(329)
Net cash provided by financing activities	2,168	15,074
Effect of exchange rate changes on cash and cash equivalents	154	(363)
Net change in cash and cash equivalents	(2,540)	(1,481)
Cash and cash equivalents, beginning of year	3,610	5,091
Cash and cash equivalents, end of year	1,070	3,610
Supplemental disclosures:
Cash paid for interest	1,817	2,628
Cash paid for income taxes	$ 26	$ 0