Note 3 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	As of September 30, 2016
	Quoted Prices  in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Cash equivalents	$	18,118	$	-	$	-	$	18,118
Government securities		20,296		-		-		20,296
Total	$	38,414	$	-	$	-	$	38,414
Liabilities
Forward foreign currency contracts	$	-	$	98	$	-	$	98
Total	$	-	$	98	$	-	$	98

	As of December 31, 2015
	Quoted Prices  in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Cash equivalents	$	39,233	$	-	$	-	$	39,233
Government securities		25,232		-		-		25,232
Total	$	64,465	$	-	$	-	$	64,465
Liabilities
Forward foreign currency contracts	$	-	$	537	$	-	$	537
Total	$	-	$	537	$	-	$	537

Available-for-sale Securities [Table Text Block]

	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
September 30, 2016
Government securities
(Due within 1 year)	$	20,288	$	8	$	-		$	20,296
	$	20,288	$	8	$	-		$	20,296
December 31, 2015
Government securities
(Due within 1 year)	$	25,243	$	1	$	(12	)	$	25,232
	$	25,243	$	1	$	(12	)	$	25,232