Note 3 - Discontinued Operations - Significant Items from Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Total current assets of discontinued operations	$ 0		$ 0		$ 15
Total current liabilities of discontinued operations	43		43		6
Net loss from discontinued operations	(46)	$ (256)	(23)	$ (385)
Net cash provided by (used in) operating activities - discontinued operations			29	(293)
ClearUP [Member] | Discontinued Operations [Member]
Accounts receivable	0		0		1
Prepaid expenses and other current assets	0		0		14
Total current assets of discontinued operations	0		0		15
Other accrued expenses	43		43		6
Total current liabilities of discontinued operations	43		43		$ 6
Revenue	(39)	86	(15)	156
Cost of Sales	6	32	9	52
Gross Profit	(45)	54	(24)	104
Selling, general and administrative	(1)	310	1	489
Total operating expenses	(1)	310	1	489
Loss from discontinued operations	(46)	(256)	(23)	(385)
Net loss from discontinued operations	$ (46)	$ (256)	(23)	(385)
Current assets of discontinued operations			15	92
Current liabilities of discontinued operations			37	0
Net cash provided by (used in) operating activities - discontinued operations			$ 29	$ (293)