Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ 800	$ 7,570
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	2,881	2,671
Gain on forgiveness of PPP loan	0	(2,692)
Gain (loss) on sale of fixed assets	(109)	(311)
(Gain) loss on sale of investment securities	0	(6)
Allowance for doubtful accounts	344	40
Stock compensation	505	531
Deferred taxes	130	(506)
(Increase) decrease in
Accounts receivable - billed	(6,554)	(255)
Accounts receivable - unbilled	(551)	302
Inventories	(973)	(651)
Prepaid expenses and other assets	(227)	92
Refundable income taxes	(66)	(411)
Increase (decrease) in
Accounts payable - trade	3,745	205
Accrued expenses and other liabilities	142	(219)
Deferred revenue	98	1,945
Accrued compensation	(248)	(282)
Accrued income taxes	(1,887)	1,563
Deferred buy-back lease obligation	(3,776)	(1,216)
Customer deposits	(588)	756
Net cash provided by (used in) operating activities	(6,334)	9,126
Cash flows from investing activities:
Purchases of investment securities available-for-sale	0	(23)
Sale of investment securities available-for-sale	0	1,247
Purchases of property and equipment	(2,749)	(5,367)
Proceeds from sale of fixed assets	118	489
Net cash provided by (used in) investing activities	(2,631)	(3,654)
Cash flows from financing activities:
Proceeds from long-term borrowings	2,805	49
Repayments of long-term borrowings	(581)	(793)
Capitalized Loan Costs	(25)	0
Net cash provided by (used in) financing activities	2,199	(744)
Net increase (decrease) in cash	(6,766)	4,728
Cash, beginning of year	13,492	8,764
Cash, ending of year	6,726	13,492
Supplemental Cash Flow information:
Cash payments for interest	260	190
Cash payments for income taxes	2,260	917
Non-cash transaction - PPP loan forgiveness	$ 0	$ 2,692