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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 2,066 $ 6,578
Adjustments to reconcile net cash used in operating activities:    
Depreciation and amortization expense 4,986 4,772
Deferred income taxes (2) (7)
Share-based compensation 807 649
Allowance for credit losses 4 16
Common stock issued under defined contribution 401(k) plan 879 978
(Gain) loss on disposal of assets (114) 48
Changes in operating assets and liabilities:    
Accounts receivable 5,866 (24,251)
AMP credit receivable 4,152 (11,217)
Contract assets (305) (221)
Inventories (2,976) 4,356
Prepaid expenses and other current assets 1,224 (162)
Accounts payable (2,932) (1,577)
Accrued liabilities (2,476) 1,925
Customer deposits (12,134) (4,646)
Other non-current assets and liabilities (31) 166
Net cash used in operating activities (986) (22,593)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property and equipment (3,279) (5,315)
Proceeds from disposals of property and equipment 159 15
Net cash used in investing activities (3,120) (5,300)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from line of credit, net 5,262 18,518
Proceeds from long-term debt 1,540 387
Payments on long-term debt (1,005) (893)
Payments on finance leases (1,276) (994)
Shares withheld for taxes in connection with issuance of restricted stock (130) (117)
Net cash provided by financing activities 4,391 16,901
NET INCREASE (DECREASE) IN CASH 285 (10,992)
CASH beginning of the period 1,099 12,732
CASH end of the period $ 1,384 $ 1,740