Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net loss	$ (102)	$ (1,824)
Less: (loss) income from discontinued operations, net of income taxes	(11)	35
Net loss from continuing operations	(91)	(1,859)
Adjustments to reconcile net loss to net cash provided by continuing operating activities:
Depreciation and amortization	191	313
Impairment of long-lived assets (Note 4)		1,261
Write-off of patents and trademarks	88
Share-based compensation	24	207
Other	370	376
Changes in operating assets and liabilities:
Other assets	872	1,260
Prepaid and other current assets	(192)	534
Accounts payable	92	116
Accrued expenses and other current liabilities	84	(457)
Lease liabilities	(445)	(528)
Other non-current liabilities	87	1
Total adjustments	1,171	3,083
Net cash provided by continuing operating activities	1,080	1,224
Discontinued operations:
Net cash used in operating activities	(70)	(319)
Net cash used in discontinued operations	(70)	(319)
Net increase in cash	1,010	905
Cash and cash equivalents - continuing operations, beginning of period	5,059	4,327
Total cash and cash equivalents, end of period	$ 6,069	$ 5,232