Note 4 - Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	March 31,		December 31,
	2022		2021
Raw materials	$	36,552	$	29,478
Work in process		142,143		130,029
Finished goods		132,345		99,910
Total	$	311,040	$	259,417

Schedule of Other Current Assets [Table Text Block]

	March 31,		December 31,
	2022		2021
RSU tax withholding proceeds receivable	$	15,595	$	16,224
Prepaid expenses		13,447		9,526
Assets for product returns		3,247		1,596
Accrued interest receivable		6,633		5,440
Other		3,344		2,754
Total	$	42,266	$	35,540

Schedule of Other Assets, Noncurrent [Table Text Block]

	March 31,		December 31,
	2022		2021
Deferred compensation plan assets	$	51,759	$	53,172
Prepaid expenses		2,261		2,311
Other		14,032		14,040
Total	$	68,052	$	69,523

Schedule of Accrued Liabilities [Table Text Block]

	March 31,		December 31,
	2022		2021
Dividends and dividend equivalents	$	40,072	$	32,364
Warranty		23,833		20,989
Stock rotation and sales returns		12,492		5,748
Customer prepayments		6,982		4,300
Income tax payable		18,816		4,921
Other		8,892		12,960
Total	$	111,087	$	81,282

Other Noncurrent Liabilities [Table Text Block]

	March 31,		December 31,
	2022		2021
Deferred compensation plan liabilities	$	53,781	$	55,489
Dividend equivalents		8,536		8,470
Other		3,242		3,268
Total	$	65,559	$	67,227