Note 4 - Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30,		December 31,
	2019		2018
Raw materials	$	27,001	$	43,017
Work in process		43,076		38,674
Finished goods		65,557		54,693
Total	$	135,634	$	136,384

Schedule of Other Current Assets [Table Text Block]

	September 30,		December 31,
	2019		2018
RSU tax withholding proceeds receivable	$	5,331	$	39
Prepaid expense		4,024		3,425
Assets for product returns		2,261		1,602
Interest receivable		1,869		1,441
Value-added tax receivable		628		423
Prepaid wafer refund receivable		-		4,297
Other		2,547		704
Total	$	16,660	$	11,931

Schedule of Other Assets, Noncurrent [Table Text Block]

	September 30,		December 31,
	2019		2018
Deferred compensation plan assets	$	36,397	$	31,970
Operating lease ROU assets		3,102		-
Prepaid expense		2,274		2,713
Other		1,570		1,296
Total	$	43,343	$	35,979

Schedule of Accrued Liabilities [Table Text Block]

	September 30,		December 31,
	2019		2018
Dividends and dividend equivalents	$	21,895	$	15,044
Stock rotation and sales returns		7,884		5,363
Customer prepayments		4,160		2,520
Income tax payable		2,778		7,018
Operating lease liabilities		1,318		-
Warranty		1,267		4,564
Commissions		976		1,369
Other		5,706		3,084
Total	$	45,984	$	38,962

Other Noncurrent Liabilities [Table Text Block]

	September 30,		December 31,
	2019		2018
Deferred compensation plan liabilities	$	36,968	$	32,283
Dividend equivalents		6,091		6,145
Operating lease liabilities		1,190		-
Other		30		97
Total	$	44,279	$	38,525