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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) $ 360 $ (1,472)
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
Stock-based compensation 264 267
Depreciation and amortization 185 153
Provision for excess and obsolete inventory 90
Changes in assets and liabilities:    
Accounts receivable 743 (1,065)
Contract assets (2,954) (1,085)
Inventories 78 (561)
Other assets 271 (28)
Accounts payable 466 611
Accrued expenses (372) (75)
Contract liabilities (1,303) 1,122
Net cash used in operating activities (2,262) (2,043)
Cash flows from investing activities:    
Investment in captive insurance company (51)
Purchases of property and equipment (45) (70)
Net cash used in investing activities (96) (70)
Cash flows from financing activities:    
Repayments of long-term debt (21) (19)
Net cash used in financing activities (21) (19)
Net decrease in cash and cash equivalents (2,379) (2,132)
Cash and cash equivalents at beginning of period 12,598 14,025
Cash and cash equivalents at end of period 10,219 11,893
Supplemental disclosure of cash flow information:    
Income taxes paid 6
Interest paid $ 3 $ 6