Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ 3,129	$ (701)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	1,294	1,176
(Gain) loss on sale of property and equipment	(3)	(199)
Allowance for credit losses	101	67
Stock compensation	35	171
Settlement of restricted stock	142	0
Deferred taxes	(2)	96
(Increase) decrease in
Accounts receivable - billed	(70)	(462)
Accounts receivable - unbilled	(402)	337
Inventories	(1,518)	(934)
Prepaid expenses	(507)	(625)
Refundable income taxes	0	(100)
Increase (decrease) in
Accounts payable - trade	(1,938)	(132)
Accrued expenses and other liabilities	274	75
Deferred revenue	1,516	207
Accrued compensation	(7)	4
Accrued income taxes	368	(146)
Customer deposits	(198)	2,248
Net cash provided by (used in) operating activities	1,930	1,082
Cash flows from investing activities:
Purchases of property and equipment	(3,504)	(2,974)
Proceeds from the sale of property and equipment	3	199
Net cash provided by (used in) investing activities	(3,501)	(2,775)
Cash flows from financing activities:
Repayments of long-term borrowings	(316)	(306)
Net cash provided by (used in) financing activities	(316)	(306)
Net increase (decrease) in cash	(1,887)	(1,999)
Cash
Beginning of period	9,175	6,726
End of period	7,288	4,727
Supplemental Cash Flow Information:
Cash payments for interest	119	128
Cash payments for income taxes	0	65
Non-Cash Investing Activity:
Capital expenditures in accounts payable	$ 527	$ 2,244