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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Cash flows from operating activities:    
Net loss $ (3,601) $ (3,779)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense 3
Loss on disposal of assets 18
Depreciation and amortization 23 40
Amortization of operating lease right-of-use assets 170 34
Inventory impairment loss 286
Recoveries of bad debt (101)
Changes in operating assets and liabilities:    
Accounts receivable and unbilled revenues, net 239 (344)
Inventory 89
Prepaid expenses and other current assets 11 362
Accounts payable, accrued payroll and employee benefits, and accrued expenses 253 149
Contract liabilities 63 41
Operating lease obligations (167) (34)
Net cash used in operating activities (3,110) (3,135)
Cash flows from investing activities:    
Purchase of property and equipment (15) (37)
Proceeds from sale of property and equipment 190
Net cash provided by (used in) investing activities (15) 153
Cash flows from financing activities:    
Principal payments on finance lease obligations (5) (13)
Net cash used in financing activities (5) (13)
Effect of exchange rate changes on cash and cash equivalents (59) (53)
Net change in cash and cash equivalents (3,189) (3,048)
Cash and cash equivalents at beginning of period 16,427 16,155
Cash and cash equivalents at end of period 13,238 13,107
Supplemental disclosure of cash flow information:    
Cash paid for income taxes 10 21
Cash paid for interest 1
Supplemental disclosure of non-cash investing and financial activities:    
Property and equipment obtained in exchange for finance lease obligations $ 34