CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows used in operating activities:
Net loss	$ (1,151)	$ (4,703)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	3,583	3,167
Loss on extinguishment of debt, net		1,369
Accretion of interest on long-term payment obligation	53	229
Amortization of debt issuance costs	52	337
Stock-based compensation expense	2,650	2,646
Changes in operating assets and liabilities:
Accounts receivable	(2,754)	(68)
Inventories	(2,278)	(959)
Prepaid expenses and other assets	569	(1,297)
Accounts payable	2,756	(1,819)
Payment obligation liability	(1,267)	(1,230)
Deferred revenue	(11)	(1,449)
Accrued expenses and other liabilities	(1,775)	(1,419)
Net cash provided by (used in) operating activities	427	(5,196)
Cash flows from investing activities:
Capital expenditures	(289)	(1,346)
Purchase of unsecured convertible notes	(50)
Acquisition of business, net of cash acquired	(1,287)	(2,027)
Proceeds on sale of investment	142
Net cash used in investing activities	(1,484)	(3,373)
Cash flows from financing activities:
Proceeds from issuance of debt, net of issuance costs	6,260	21,801
Repayments of debt	(3,610)	(28,214)
Repayments of notes payable	(2,000)
Taxes paid related to net share settlement of restricted stock units	(890)	(668)
Proceeds from issuance of Series B preferred stock, net of issuance costs		7,876
Proceeds from exercise of stock options	13	13
Net cash (used in) provided by financing activities	(227)	808
Effect of exchange rates on cash	(199)	(425)
Net decrease in cash	(1,483)	(8,186)
Cash and cash equivalents at beginning of period	10,866	19,052
Cash and cash equivalents at end of period	9,383	10,866
Supplemental Disclosures of Cash Flow Information:
Interest paid	857	1,787
Taxes paid, net	220	179
Non-cash investing and financing activities:
Cancelation of holdback shares in connection with acquisition	340
Dividends earned on Series B preferred stock	1,042	833
Issuance of shares to non-employees		12
Liquidation of subsidiary with noncontrolling interest	170
Promissory notes issued in acquisition of business		2,000
Common Stock
Non-cash investing and financing activities:
Common stock issued for acquisition of businesses	$ 1,635	$ 5,132