Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income (loss)	$ 3,327	$ 1,147
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	671	641
(Gain) loss on sale of property and equipment	0	(352)
Allowance for credit losses	92	147
Stock compensation	4	5
Deferred taxes	(10)	(1)
(Increase) decrease in
Accounts receivable - billed	(3,552)	(2,993)
Accounts receivable - unbilled	375	(112)
Inventories	(807)	(1,801)
Prepaid expenses	(365)	20
Increase (decrease) in
Accounts payable - trade	37	(392)
Accrued expenses and other liabilities	(33)	1,069
Deferred revenue	1,426	1,648
Accrued compensation	(586)	(332)
Accrued income taxes	1,017	358
Customer deposits	621	171
Net cash provided by (used in) operating activities	2,217	(777)
Cash flows from investing activities:
Purchases of property and equipment	(595)	(1,795)
Proceeds from the sale of property and equipment	0	355
Net cash provided by (used in) investing activities	(595)	(1,440)
Cash flows from financing activities:
Repayments of long-term borrowings	(164)	(157)
Net cash provided by (used in) financing activities	(164)	(157)
Net increase (decrease) in cash	1,458	(2,374)
Cash
Beginning of period	7,548	9,175
End of period	9,006	6,801
Supplemental Cash Flow Information:
Cash payments for interest	55	60
Cash payments for income taxes	0	0
Non-Cash Investing Activity:
Capital expenditures in accounts payable	$ 1,034	$ 2,099