Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net loss	$ (3,654)	$ (3,842)
Net loss (income) from discontinued operations	486	(2,149)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	199	425
Stock-based compensation expense	374	304
Gain on change in fair value of liability-classified warrants	(591)	(404)
Gain on sale of DuraFit business	0	(805)
Deferred income tax provision	633	0
Loss on extinguishment of debt	0	194
(Gain) loss on foreign currency transactions	(98)	92
Other	(34)	8
Changes in operating assets and liabilities:
Accounts receivable	521	747
Inventories	(50)	866
Prepaid expenses and other assets	505	57
Accounts payable, accrued expenses and other current liabilities	(204)	(3,023)
Income taxes payable	26	0
Cash used in operating activities of continuing operations	(1,887)	(7,530)
Cash provided by operating activities of discontinued operations	282	2,803
Net cash used in operating activities	(1,605)	(4,727)
Cash flows from investing activities:
Purchases of property and equipment	(8)	0
Proceeds from sale of DuraFit business	0	3,337
Proceeds from sale of property and equipment	35	0
Net cash provided by investing activities	27	3,337
Cash flows from financing activities:
Net payments under demand line of credit	0	(1,291)
Payments of shareholder notes payable	0	(2,000)
Net proceeds from issuance of common stock	2,077	0
Proceeds from exercise of stock options	0	42
Cash provided by (used in) financing activities of continuing operations	2,077	(3,127)
Cash used in financing activities of discontinued operations	0	(167)
Net cash provided by (used in) financing activities	2,077	(3,294)
Effect of exchange rates on cash	(52)	186
Net change in cash	447	(4,498)
Cash at beginning of period	2,807	7,839
Cash at end of period	$ 3,254	$ 3,341