Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (3,481)	$ (2,993)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	330	418
Stock-based compensation expense	224	639
Loss (gain) on change in fair value of liability-classified warrants	334	(1,588)
Loss (gain) on foreign currency transactions	92	(796)
Amortization of debt discount	0	226
Amortization of debt discount	194	1,630
Gain on change in fair value of bifurcated derivative liability	0	(2,754)
Other	4	59
Changes in operating assets and liabilities:
Accounts receivable	823	(22)
Inventories	1,356	26
Prepaid expenses and other assets	(20)	(3,199)
Accounts payable, accrued expenses and other current liabilities	(3,449)	2,932
Income taxes payable	40	58
Net cash used in operating activities	(3,553)	(5,364)
Cash flows from investing activities:
Purchases of property and equipment	0	(95)
Proceeds from sale of property and equipment	0	93
Net cash used in investing activities	0	(2)
Cash flows from financing activities:
Net payments under demand line of credit	(786)	(521)
Payments of shareholder notes payable	(2,000)	0
Proceeds from exercise of stock options	30	0
Proceeds from issuance of debt	0	3,750
Proceeds from exercise of warrants	0	20
Net cash (used in) provided by financing activities	(2,756)	3,249
Effect of exchange rates on cash	81	20
Net change in cash	(6,228)	(2,097)
Cash at beginning of period	7,839	2,958
Cash at end of period	$ 1,611	$ 861