v3.25.1
Consolidated Statements of Cash Flows - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flow from operating activities:    
Net loss $ (13,859,000) $ (18,658,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Change in fair value of long-term debt 760,000 397,000
Change in fair value of warrant liability (378,000) 870,000
Depreciation and amortization 521,000 203,000
Stock-based compensation 2,694,000 2,591,000
Non-cash lease expense 215,000 214,000
Loss on fixed asset disposal 14,000  
Excess and obsolete inventory related charges 313,000 83,000
Provision for credit losses (7,000) 80,000
Amortization of premium of marketable securities (128,000) (677,000)
Non-cash changes in the fair value of NQDC plan (695,000) 278,000
Changes in operating assets and liabilities:    
Trade and other receivables (253,000) 503,000
Prepaids and other current assets 350,000 (1,862,000)
Inventory (1,439,000) (1,659,000)
Operating lease liability (231,000) (224,000)
Corporate-owned life insurance ("COLI") asset 492,000 (215,000)
Other long-term assets 259,000 (46,000)
Accounts payable and accrued expenses 2,330,000 (763,000)
Accrued wages and fringe benefits (2,105,000) (2,170,000)
Current non-qualified deferred compensation liability (1,567,000) 473,000
Other current liabilities 1,119,000 (109,000)
Non-qualified deferred compensation plan liability 1,294,000 (165,000)
Contract liabilities (8,000) (8,000)
Net cash used in operating activities (10,309,000) (20,864,000)
Cash flows from investing activities:    
Purchase of marketable securities   (2,904,000)
Maturities of marketable securities 11,000,000 19,200,000
Purchase of plant and equipment (221,000) (1,147,000)
Patent filing fees (13,000) (83,000)
Net cash provided by investing activities 10,766,000 15,066,000
Cash flow from financing activities:    
Proceeds from exercise of stock options 363,000 631,000
Net cash provided by financing activities 363,000 631,000
Net increase/(decrease) in cash and cash equivalents 820,000 (5,167,000)
Cash and cash equivalents beginning of the period 14,050,000 22,118,000
Cash and cash equivalents end of the period 14,870,000 16,951,000
Supplemental Disclosure of Cash Flow Information:    
Income taxes paid during the period   17,000
Interest paid during the period 1,232,000 1,355,000
Non-cash investing activities:    
Plant and equipment purchases not yet paid $ 168,000 74,000
Right-of-use-asset obtained in exchange for lease liabilities   $ 1,053,000