CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net loss	$ (399)	$ (5,046)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	1,750	1,561
Loss on extinguishment of debt, net		1,369
Accretion of interest on long-term payment obligation	82	124
Stock-based compensation expense	1,380	1,284
Amortization of debt issuance costs	33	223
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable	(1,930)	323
Inventories	298	(1,361)
Prepaid expenses and other assets	(123)	(260)
Accounts payable	2,177	(272)
Payment obligation liability	(629)	(610)
Deferred revenue	868	(115)
Accrued expenses and other liabilities	(1,084)	202
Net cash provided by (used in) operating activities	2,423	(2,578)
Cash flows from investing activities:
Capital expenditures	(105)	(217)
Acquisition of business, net of cash acquired	(1,287)	(1,384)
Net cash used in investing activities	(1,392)	(1,601)
Cash flows from financing activities:
Proceeds from issuance of debt, net of issuance costs	3,073	12,339
Repayments of debt	(1,371)	(16,612)
Repayments of notes payable	(2,000)
Taxes paid related to net share settlement of restricted stock units	(503)	(278)
Proceeds from issuance of Series B preferred stock, net of issuance costs		7,895
Net cash (used in) provided by financing activities	(801)	3,344
Effect of exchange rates on cash	21	(295)
Net increase (decrease) in cash	251	(1,130)
Cash at beginning of period	10,866	19,052
Cash at end of period	11,117	17,922
Supplemental Disclosures of Cash Flow Information:
Interest paid	476	1,320
Taxes paid, net	110	91
Non-cash investing and financing activities:
Promissory notes issued in acquisition of business		2,000
Cancelation of holdback shares in connection with acquisition	340
Common Stock
Non-cash investing and financing activities:
Stock issued for acquisition of business	$ 1,635	$ 2,635