Note 11 - Segment, Customer Concentration and Geographical Information - Schedule of Expenses (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2025	Jun. 30, 2025	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues		$ 4,347		$ 4,648		$ 13,389	$ 15,585
Adjusted cost of revenues¹	[1]	1,136		1,318		3,565	4,889
Adjusted selling and marketing²		1,268		1,725		4,079	6,060
Adjusted research and development²	[2]	2,449		3,086		7,640	10,180
Adjusted general and administrative²	[2]	1,988		2,004		6,035	6,197
Adjusted operating loss		(2,494)		(3,485)		(7,930)	(11,741)
Other segment expenses³	[3]	0		(348)		(79)	(798)
Stock-based compensation expense		(644)		(1,249)		(2,828)	(3,520)
Depreciation		(71)		(91)		(217)	(285)
Amortization		(1,276)		(1,334)		(3,828)	(4,601)
Goodwill impairment		0	$ (11,100)	0	$ (24,000)	(11,052)	(23,989)
Proceeds from sale of ViewSpot, net		(0)		(0)		1,287	(0)
Total other (expenses) income, net		(50)		138		(126)	667
Loss before provision for income taxes		(4,535)		(6,369)		(24,773)	(44,267)
Provision for income tax expense		0		0		1	39
Net loss		(4,535)		(6,369)		(24,774)	(44,306)
Deemed dividend		(635)		0		(635)	0
Net loss attributable to common stockholders		$ (5,170)		$ (6,369)		$ (25,409)	$ (44,306)

[1] Adjusted amounts exclude depreciation expense.

[2] Adjusted amounts exclude stock-based compensation expense and other adjustments as further described in footnote 3 to this table.

[3] Other segment expenses include personnel severance and reorganization activities and other corporate non-recurring expenditures.