CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net loss	$ (2,301)	$ (677)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	740	630
Gain on extinguishment of debt		(977)
Accretion of interest on long-term payment obligation	64	87
Amortization of debt issuance costs	109	223
Stock-based compensation expense	635	591
Changes in operating assets and liabilities:
Accounts receivable	2,327	625
Inventories	(167)	(995)
Prepaid expenses and other assets	(262)	(359)
Accounts payable	(429)	1,431
Payment obligation liability	(300)	(291)
Deferred revenue	311	(159)
Accrued expenses and other liabilities	(262)	(910)
Net cash provided by (used in) operating activities	465	(781)
Cash flows from investing activities:
Capital expenditures	(67)	(50)
Acquisition of business, net of acquired cash	(1,384)
Net cash used in investing activities	(1,451)	(50)
Cash flows from financing activities:
Proceeds from issuance of debt, net of issuance costs	9,599	21,484
Repayment of debt	(10,952)	(22,014)
Taxes paid related to net share settlement of restricted stock units	(162)	(68)
Net cash used in financing activities	(1,515)	(598)
Effect of exchange rates on cash	134	195
Net decrease in cash	(2,367)	(1,234)
Cash at beginning of period	19,052	9,116
Cash at end of period	16,685	7,882
Supplemental Disclosures of Cash Flow Information
Interest paid	353	415
Taxes paid, net	44	46
Non-cash investing and financing activities:
Warrants issued as debt issuance costs in connection with debt agreements		$ 2,319
Stock issued for acquisition of business	1,000
Promissory notes issued for acquisition of business	2,000
Common Stock
Non-cash investing and financing activities:
Stock issued for acquisition of business	$ 2,294