CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Cash flows from operating activities:
Net loss	$ (13,112)	$ (6,212)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,678	2,449
Change in fair value of financial instruments	8,868	126
Convertible debenture and other accrued interest	793	868
Changes in right-of-use assets	114	473
Share-based compensation	151	187
Other	(788)	126
Changes in operating assets and liabilities:
Accounts receivable, net	(575)	(394)
Inventories, net	856	19
Prepaid expenses and other current assets	109	28
Operating lease obligations	(194)	(605)
Accounts payable, accrued and other liabilities	(537)	71
Other operating assets and liabilities, net	(142)	96
Net cash used in operating activities	(2,779)	(2,768)
Cash flows from investing activities:
Purchases of property and equipment and intangible assets	(21)	(521)
Proceeds from sale of assets	4	28
Net cash used in investing activities	(17)	(493)
Cash flows from financing activities:
Other financing activities	(41)	0
Net cash used in financing activities	(41)	0
Net decrease in cash and cash equivalents	(2,837)	(3,261)
Cash and cash equivalents —beginning of period	8,035	22,618
Cash and cash equivalents —end of period	5,198	19,357
Non-cash activities:
Non-cash purchase of property and equipment and intangible assets	$ 0	$ (83)