Note 3 - Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2014

Disclosure Text Block Supplement [Abstract]

Schedule of Inventory, Current [Table Text Block]

	June 30, 2014		December 31, 2013
Work in process	$	25,156	$	26,605
Finished goods		16,042		13,132
Total inventories	$	41,198	$	39,737

Schedule of Other Assets, Noncurrent [Table Text Block]

	June 30, 2014		December 31, 2013
Deferred compensation plan assets	$	3,053	$	607
Prepaid expense		1,561		57
Other		972		980
Total other long-term assets	$	5,586	$	1,644

Schedule of Accrued Liabilities [Table Text Block]

	June 30, 2014		December 31, 2013
Deferred proceeds from litigation	$	-	$	9,489
Dividends and dividend equivalents		5,893		-
Deferred revenue and customer prepayments		4,204		2,523
Commissions		1,234		931
Stock rotation reserve		1,224		1,459
Sales rebate		1,154		900
Warranty		290		451
Other		1,606		1,623
Total accrued liabilities	$	15,605	$	17,376

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Balance at beginning of period	$	334		$	275		$	451		$	331
Warranty provision for product sales		68			113			128			215
Settlements made		-			(3	)		(74	)		(95	)
Unused warranty provision		(112	)		(51	)		(215	)		(117	)
Balance at end of period	$	290		$	334		$	290		$	334

Schedule of Other Assets and Other Liabilities [Table Text Block]

	June 30, 2014		December 31, 2013
Deferred compensation plan liabilities	$	3,078	$	628
Other		1,220		850
Total other long-term liabilities	$	4,298	$	1,478