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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Cash flows from operating activities:    
Net income (loss) $ 1,147 $ 80
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Depreciation and amortization 641 594
(Gain) loss on sale of property and equipment (352) (82)
Allowance for credit losses 147 92
Stock compensation 5 85
Deferred taxes (1) 1
(Increase) decrease in    
Accounts receivable - billed (2,993) (1,800)
Accounts receivable - unbilled (112) (1,544)
Inventories (1,801) (1,173)
Prepaid expenses 20 (70)
Refundable income taxes 0 2
Increase (decrease) in    
Accounts payable - trade (392) 624
Accrued expenses and other liabilities 1,069 (54)
Deferred revenue 1,648 59
Accrued compensation (332) (148)
Accrued income taxes 358 22
Customer deposits 171 1,757
Net cash provided by (used in) operating activities (777) (1,555)
Cash flows from investing activities:    
Purchases of property and equipment (1,795) (1,164)
Proceeds from the sale of property and equipment 355 82
Net cash provided by (used in) investing activities (1,440) (1,082)
Cash flows from financing activities:    
Repayments of long-term borrowings (157) (153)
Net cash provided by (used in) financing activities (157) (153)
Net increase (decrease) in cash (2,374) (2,790)
Cash    
Beginning of period 9,175 6,726
End of period 6,801 3,936
Supplemental Cash Flow Information:    
Cash payments for interest 60 64
Cash payments for income taxes 0 0
Non-Cash Investing Activity:    
Capital expenditures in accounts payable $ 2,099 $ 2,052