Note 5 - Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Dividends and dividend equivalents	$ 32,364	$ 26,435
Warranty	20,989	6,895
Stock rotation and sales returns	5,748	6,005
Customer prepayments	4,300	7,238
Other	17,881	16,387
Total	$ 81,282	$ 62,960