CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows used in operating activities:
Net loss	$ (5,105)	$ (1,151)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	3,313	3,583
Accretion of interest on contractual payment obligation	139	53
Amortization of debt issuance costs	497	52
Stock-based compensation expense	3,027	2,650
Impairment of right-of-use operating lease asset	1,294
Increase (decrease) in fair value of earnout liability	(261)	550
Changes in operating assets and liabilities:
Accounts receivable	(591)	(2,754)
Inventories	(4,105)	(2,278)
Prepaid expenses and other assets	(570)	569
Accounts payable	2,455	2,756
Contractual payment obligation liability	(770)	(1,267)
Deferred revenue	(467)	(11)
Accrued expenses and other liabilities	(622)	(2,325)
Net cash provided by (used in) operating activities	(1,766)	427
Cash flows from investing activities:
Capital expenditures	(1,564)	(289)
Purchase of unsecured convertible notes		(50)
Acquisition of business, net of cash acquired		(1,287)
Proceeds on sale of investment		142
Net cash used in investing activities	(1,564)	(1,484)
Cash flows from financing activities:
Repayments of notes payable		(2,000)
Taxes paid related to net share settlement of restricted stock units	(890)	(890)
Proceeds from exercise of stock options	13	13
Net cash provided by (used in) financing activities	4,853	(227)
Effect of exchange rates on cash	503	(199)
Net increase (decrease) in cash	2,026	(1,483)
Cash and cash equivalents at beginning of year	9,383	10,866
Cash and cash equivalents at end of year	11,409	9,383
Supplemental Disclosures of Cash Flow Information:
Interest paid	945	857
Taxes paid, net	112	220
Non-cash investing and financing activities:
Common stock issued to settle vendor liability	304
Common stock issued to settle earnout liability	489
Fair value of warrants issued in connection with financial liabilities	332
Dividends earned on Series B preferred stock	1,094	1,042
Cancellation of holdback shares in connection with acquisition		340
Liquidation of subsidiary with noncontrolling interest		170
Common Stock
Non-cash investing and financing activities:
Common stock issued for acquisition of businesses		1,635
April 21 Funds Promissory Notes
Cash flows from financing activities:
Repayments under revolving loan facility, East West Bank term loan and April 21 Funds promissory note, net of issuance costs	(1,200)
Proceeds from promissory notes	4,000
Paycheck Protection Program Promissory Note
Cash flows from financing activities:
Proceeds from promissory notes	2,915
Revolving Loan Facility
Cash flows from financing activities:
Borrowings under revolving loan facility and East West Bank term loan, net of issuance costs	3,362	6,260
Repayments under revolving loan facility, East West Bank term loan and April 21 Funds promissory note, net of issuance costs	(3,347)	$ (3,610)
East West Bank Term Loan
Cash flows from financing activities:
Borrowings under revolving loan facility and East West Bank term loan, net of issuance costs	4,500
Repayments under revolving loan facility, East West Bank term loan and April 21 Funds promissory note, net of issuance costs	$ (4,500)