Note 4 - Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2014

Disclosure Text Block Supplement [Abstract]

Schedule of Inventory, Current [Table Text Block]

	September 30,		December 31,
	2014		2013
Work in process	$	25,594	$	26,605
Finished goods		15,993		13,132
Total	$	41,587	$	39,737

Schedule of Other Assets, Noncurrent [Table Text Block]

	September 30,		December 31,
	2014		2013
Deferred compensation plan assets	$	5,490	$	607
Prepaid expense		1,490		57
Other		960		980
Total	$	7,940	$	1,644

Schedule of Accrued Liabilities [Table Text Block]

	September 30,		December 31,
	2014		2013
Deferred proceeds from litigation	$	-	$	9,489
Dividends and dividend equivalents		5,994		-
Deferred revenue and customer prepayments		4,110		2,523
Stock rotation reserve		2,095		1,459
Commissions		1,228		931
Sales rebate		451		900
Warranty		240		451
Other		1,410		1,623
Total	$	15,528	$	17,376

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
Balance at beginning of period	$	290		$	334		$	451		$	331
Warranty provision for product sales		78			130			207			349
Settlements made		-			(3	)		(74	)		(98	)
Unused warranty provision		(128	)		(78	)		(344	)		(199	)
Balance at end of period	$	240		$	383		$	240		$	383

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

	September 30,		December 31,
	2014		2013
Deferred compensation plan liabilities	$	5,433	$	628
Contingent consideration		2,507		-
Other		1,424		850
Total	$	9,364	$	1,478