Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities:
Net income (loss)	$ 964	$ (4,549)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	686	709
Amortization	239	238
Non cash amortization of right-of-use asset and liability	(187)	(236)
Provision for excess and obsolete inventories	265	422
Charge for lower of cost or net realizable value inventories	0	105
Stock based compensation expense	500	694
Gain from disposal of property and equipment	(212)	(13)
Gain on extinguishment of debt	0	(2,955)
Changes in assets and liabilities:
Accounts receivable	4,066	(2,203)
Unbilled revenue	(359)	(1,337)
Income tax receivable/payable	0	1,249
Inventories	(3,276)	(249)
Prepaid expenses and other assets	(273)	(384)
Accounts payable	2,213	3,516
Accrued expenses and other liabilities	448	1,148
Deferred revenue	80	42
Net cash provided by (used in) operating activities	5,154	(3,803)
Investing Activities:
Proceeds from promissory note receivable	0	2,270
Purchases of property and equipment	(209)	(226)
Disposals of property and equipment	423	18
Net cash provided by investing activities	214	2,062
Financing Activities:
Payments on bank line of credit	(2,050)	(750)
Payments on financing lease obligations	(719)	(398)
Payments on notes payable	0	55
Proceeds from sale of common stock	1,627	21
Proceeds from stock options exercised	64	89
Net cash used in financing activities	(1,078)	(983)
Net increase (decrease) in cash, cash equivalents and restricted cash	4,290	(2,724)
Cash, cash equivalents and restricted cash at beginning of period	2,418	5,666
Cash, cash equivalents and restricted cash at end of period	$ 6,708	$ 2,942