CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income (loss)	$ 80	$ (119)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	594	703
(Gain) loss on sale of property and equipment	(82)	(39)
Provision for Bad Debts	92	30
Stock compensation	85	126
Deferred taxes	1	5
(Increase) decrease in
Accounts receivable - billed	(1,800)	(2,064)
Accounts receivable - unbilled	(1,544)	(24)
Inventories	(1,173)	(480)
Prepaid expenses and other assets	(70)	90
Refundable income taxes	2	0
Increase (decrease) in
Accounts payable - trade	624	1,454
Accrued expenses and other liabilities	(54)	(365)
Deferred revenue	59	(11)
Accrued compensation	(148)	(129)
Accrued income taxes	22	(43)
Deferred buy-back lease obligation	0	(314)
Customer deposits	1,757	(13)
Net cash provided by (used in) operating activities	(1,555)	(1,193)
Cash flows from investing activities:
Purchases of property and equipment	(1,164)	(196)
Proceeds from the sale of property and equipment	82	39
Net cash provided by (used in) investing activities	(1,082)	(157)
Cash flows from financing activities:
Proceeds from long-term borrowings	0	2,805
Repayments of long-term borrowings	(153)	(129)
Net cash provided by (used in) financing activities	(153)	2,676
Net increase (decrease) in cash	(2,790)	1,326
Cash
Beginning of period	6,726	13,492
End of period	3,936	14,818
Supplemental Cash Flow Information:
Cash payments for interest	64	48
Cash payments for income taxes	$ 0	$ 0