Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Operating Activities
Net loss	$ (17,521)	$ (11,165)
Adjustments to reconcile net loss to cash flows from operating activities:
Depreciation	200	310
Stock-based compensation expense	127	478
Change in fair value of warrant liability	(4,133)	(4,615)
Loss on disposal of intangible asset	0	99
Financing expense	10,553	5,607
Amortization of operating lease right-of-use asset	217	0
Changes in operating assets and liabilities:
Accounts receivable	234	224
Inventory	(192)	279
Other current assets	(528)	(160)
Other assets and liabilities	(173)	(22)
Accounts payable and accrued expenses	406	(626)
Net cash used in operations	(10,810)	(9,591)
Investing activities:
Purchase of property and equipment	(90)	(60)
Net cash used in investing activities	(90)	(60)
Financing activities:
Issuance of Common Stock and warrants from offering, net	3,999	2,403
Proceeds from exercise of Series J Convertible Preferred Warrants	0	501
Proceeds from exercise of April 2024 Warrants, net	0	2,246
Issuance of July and August 2024 Common Stock and Warrants, net	0	2,160
Proceeds from warrant inducement in November 2024, net	0	3,364
Proceeds from the exercise of warrants, net	0	288
Issuance of Common Stock from ATM, net	2,941	0
Net cash provided by financing activities	6,940	10,962
Effect of exchange rate changes on cash	55	(16)
Net increase (decrease) in cash, cash equivalents and restricted cash	(3,905)	1,295
Cash, cash equivalents and restricted cash—beginning of year	5,095	3,800
Cash, cash equivalents and restricted cash—end of year	1,190	5,095
Supplemental schedule of non-cash activities
Issuance of Series J Preferred Stock for exercise of Warrants	0	1,857
Reclassification of April 2024 warrants to equity	0	4,217
Series A warrants conversion to equity	8,440	0
Series B warrant exercises	2,055	0
Deemed dividend on Series J Preferred Stock	4	541
Supplemental cash flow information
Cash paid for income taxes	7	7
Series F-1 Convertible Preferred Stock [Member]
Supplemental schedule of non-cash activities
Issuance of Common Stock for conversion	1,100	0
Series J Convertible Preferred Stock [Member]
Supplemental schedule of non-cash activities
Issuance of Common Stock for conversion	$ 0	$ 1,535