Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net loss	$ (8,534)	$ (9,336)
Net loss from discontinued operations	112	223
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	924	1,007
Stock-based compensation expense	767	639
Loss (gain) on change in fair value of liability-classified warrants	(2,617)	506
Gain on foreign currency transactions	(718)	(878)
Offering costs	833	293
Other	(256)	(390)
Changes in operating assets and liabilities:
Accounts receivable	(1,705)	2,024
Inventories	(2,483)	(1,359)
Prepaid expenses and other assets	(294)	(83)
Accounts payable, accrued expenses and other current liabilities	2,790	(2,374)
Income taxes	312	(189)
Cash used in operating activities of continuing operations	(10,869)	(9,917)
Cash used in operating activities of discontinued operations	(712)	(15)
Net cash used in operating activities	(11,581)	(9,932)
Cash flows from investing activities:
Distribution from unconsolidated affiliate		91
Purchases of property and equipment	(661)	(454)
Proceeds from sale of business held for sale		1,328
Proceeds from sale of property, equipment and other assets	208	307
Cash provided by (used in) investing activities of continuing operations	(453)	1,272
Cash used in investing activities of discontinued operations		(8)
Net cash provided by (used in) investing activities	(453)	1,264
Cash flows from financing activities:
Net borrowings under demand line of credit	671	584
Proceeds from issuance of common stock and warrants, net of offering costs	7,115	9,923
Proceeds from exercise of warrants		1,000
Proceeds from exercise of stock options		525
Other		(18)
Net cash provided by financing activities	7,786	12,014
Effect of exchange rates on cash	(14)	(35)
Net change in cash	(4,262)	3,311
Cash at beginning of year	7,220	3,909
Cash at end of year	2,958	7,220
Supplemental disclosures:
Cash paid for interest	1,075	1,107
Cash paid for income taxes	$ 227	$ 879