CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income (loss)	$ 796	$ 7,546
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	2,127	1,976
Gain on forgiveness of PPP loan	0	(2,692)
(Gain) loss on sale of property and equipment	(94)	(293)
Unrealized (gain) loss on investment securities available for sale	0	5
Allowance for doubtful accounts	0	25
Stock compensation	379	258
Deferred taxes	(5)	(3)
(Increase) decrease in
Accounts receivable - billed	(3,163)	(2,799)
Accounts receivable - unbilled	161	259
Inventories	(1,139)	(1,002)
Prepaid expenses and other assets	(104)	10
Refundable income taxes	235	0
Increase (decrease) in
Accounts payable - trade	2,506	1,300
Accrued expenses and other liabilities	(230)	(86)
Deferred revenue	227	1,959
Accrued compensation	(444)	(68)
Accrued income taxes	(1,918)	1,016
Deferred buy-back lease obligation	(2,851)	(903)
Customer deposits	184	1,054
Net cash provided by (used in) operating activities	(3,333)	7,562
Cash flows from investing activities:
Purchases of investment securities available-for-sale	0	(20)
Purchases of property and equipment	(3,739)	(1,210)
Deferred buy-back asset	1,909	0
Proceeds from the sale of property and equipment	103	466
Net cash provided by (used in) investing activities	(1,727)	(764)
Cash flows from financing activities:
Proceeds from long-term borrowings	2,805	50
Repayments of long-term borrowings	(429)	(617)
Net cash provided by (used in) financing activities	2,376	(567)
Net increase (decrease) in cash	(2,684)	6,231
Cash
Beginning of period	13,492	8,764
End of period	10,808	14,995
Supplemental Cash Flow Information:
Cash payments for interest	187	145
Cash payments for income taxes	2,179	713
Non-cash transaction - Gain on forgiveness of PPP loan	0	2,692
Non-cash transaction - Deferred buy-back lease obligation	$ 2,851	$ 903