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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Cash flows from operating activities:              
Net loss $ (554) $ (418) $ (1,167) $ (1,333) $ (972) $ (2,500) $ (4,300)
Adjustments to reconcile net loss to net cash used in operating activities:              
Gain on debt extinguishment 0   0   (187) 0  
Depreciation 11   8   19 16  
Stock-based compensation 0   23   1 49  
Provision for doubtful accounts receivable (12)   21   (76) 50  
Provision for slow-moving and obsolete inventories 158   (107)   225 (130)  
Provision for warranties 1   3   (33) (37)  
Amortization of loan discounts and origination fees 0   47   5 109  
Changes in operating assets and liabilities (sources / (uses) of cash):              
Accounts receivable (243)   93   1,197 (403)  
Inventories 448   (259)   423 303  
Prepayments to vendors (87)   0   15 (23)  
Prepaid and other assets (16)   454   (59) 460  
Accrued and other liabilities 1   (174)   (26) (130)  
Operating lease - ROU and liabilities 11   22   24 44  
Total adjustments (164)   1,015   196 1,165  
Net cash used in operating activities (718)   (152)   (776) (1,335) (2,400)
Cash flows from financing activities (sources / (uses) of cash):              
Issuance of common stock 851   1,304   851 4,329  
Costs related to reverse stock-split 0   (16)   0 (16)  
Net payments on proceeds from the credit line borrowings - Credit Facilities 0   (121)   0 (1,214)  
Net cash provided by ( used in) financing activities 851   1,167   (149) 2,599  
Net increase (decrease) in cash 133   1,015   (925) 1,264  
Cash, beginning of period 972 2,030 301 52 2,030 52 52
Cash, end of period 1,105 $ 972 1,316 $ 301 1,105 1,316 $ 2,030
Supplemental information:              
Cash paid in year for interest 0   10   5 70  
2022 Streeterville Note              
Cash flows from financing activities (sources / (uses) of cash):              
Payments on the 2022 Streeterville Note 0   0   (1,000) (500)  
Nonrelated Party              
Changes in operating assets and liabilities (sources / (uses) of cash):              
Accounts payable 140   884   79 857  
Related Party              
Changes in operating assets and liabilities (sources / (uses) of cash):              
Accounts payable $ (576)   $ 0   $ (1,411) $ 0