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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended 18 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2025
Mar. 31, 2024
Sep. 30, 2024
Mar. 31, 2025
Operating Activities:                
Net loss $ (6,139) $ (4,078) $ (6,938) $ (6,724) $ (10,217) $ (13,662)    
Adjustments to reconcile net loss to net cash used in operating activities:                
Depreciation and amortization         1,428 1,460    
Warranty provision         (12) (46)    
Inventory obsolescence         165 65    
Loss on disposition of fixed assets         6 2    
Stock-based compensation         805 970    
Partial release of valuation allowance         0 (525)    
Gain on change in fair value of warrants         (3,420) 0    
Loss on change in fair value of Term Loan         800 0    
Amortization of operating lease right of use asset         379 387    
Accretion of acquisition holdback liability         0 10    
Remeasurement of acquisition contingent consideration         0 44    
Accretion of investment of marketable securities         (40) 0    
Changes in operating assets and liabilities:                
Accounts receivable, net         (340) 3,277    
Inventories, net         (1,527) (128)    
Prepaid expenses and other         (1,369) (4,425)    
Accounts payable         151 (196)    
Accrued and other liabilities         7,816 271    
Net cash used in operating activities         (5,375) (12,496)    
Investing Activities:                
Purchases of marketable securities         (1,401) (8,210)    
Proceeds from maturities of marketable securities         8,086 6,688    
Cash paid for acquisitions net of cash acquired         0 (908)    
Cash paid for asset purchase holdback liability         0 (764)    
Capital expenditures         (224) (153)    
Net cash provided by (used in) investing activities         6,461 (3,347)    
Financing Activities:                
Proceeds from exercise of stock options         43 0    
Proceeds from offering of common stock, net of issuance costs         0 10,449    
Payment of contingent consideration         0 (219)    
Shares retained for payment of taxes in connection with settlement of restricted stock units         (18) (12)    
Net cash provided by financing activities         25 10,218    
Effect of foreign exchange rate on cash         (54) (4)    
Net increase (decrease) in cash, cash equivalents, and restricted cash         1,057 (5,629)    
Cash, cash equivalents and restricted cash, beginning of period   $ 5,290   $ 9,519 5,290 9,519 $ 9,519  
Cash, cash equivalents and restricted cash, end of period 6,347   3,890   6,347 3,890 5,290 $ 6,347
Cash and cash equivalents 5,667   3,544   5,667 3,544 4,945 5,667
Restricted cash, current portion 95   0   95 0   95
Long-term restricted cash 585   346   585 346   585
Total cash, cash equivalents and restricted cash shown in the consolidated statement of cash flows $ 6,347   $ 3,890   6,347 3,890 5,290 6,347
Noncash investing and financing activities:                
Change in unrealized loss on marketable securities         (8) 7    
Purchases of property and equipment included in accounts payable and accrued liabilities         27 0    
Supplemental disclosure of cash flow information                
Cash paid for interest         718 0    
Cash paid for taxes         15 0    
Evertel Technologies, LLC [Member]                
Adjustments to reconcile net loss to net cash used in operating activities:                
Remeasurement of acquisition contingent consideration               $ 16
Financing Activities:                
Payment of contingent consideration         (219)   $ (219)  
Noncash investing and financing activities:                
Obligation to issue common stock in connection with the Evertel acquisition         0 (685)    
Shares issued         0 (1,924)    
Contingent consideration payable in connection with the Evertel acquisition         0 (60)    
Holdback liability payable in connection with the Evertel acquisition         0 (240)    
Evertel Technologies, LLC [Member] | Contingent Consideration Liability [Member]                
Noncash investing and financing activities:                
Shares issued         $ 0 $ (656)