Note 2 - Revenue (Details Textual) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($)	Sep. 30, 2025	Sep. 30, 2026 USD ($)	Sep. 30, 2025	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Revenue from Contract with Customers, Sales Returns, Percent			1.00%	1.00%
Contract with Customer, Liability	$ 1.5		$ 1.5		$ 4.1	$ 4.9
Increase (Decrease) in Contract with Customer, Liability			1.5
Contract with Customer, Liability, Revenue Recognized			$ 4.1
Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Markets			0	0
Number of Major Customers	0	0	0	0
Minimum [Member]
Revenue from Contract with Customer, Sales Returns Policy Term (Day)			14 days
Revenue from Contract with Customers, Historical Sales Returns, Percent			1.00%
Maximum [Member]
Revenue from Contract with Customer, Sales Returns Policy Term (Day)			1 year
Revenue from Contract with Customers, Historical Sales Returns, Percent			11.00%