Note 8 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties	$ (3,400)		$ 1,400	$ 1,900	$ 2,200
Purchase Obligation, Total	$ 1,363,718			$ 1,363,718
Long-term Supply Agreement [Member]
Purchase Obligation, Total			$ 170,000		$ 170,000
Minimum [Member]
Warranty Term (Year)		1 year
Maximum [Member]
Warranty Term (Year)		2 years