Note 3 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

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

	As of June 30, 2016
	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Cash equivalents	$	32,136	$	-	$	-	$	32,136
Government securities		19,486		-		-		19,486
Total	$	51,622	$	-	$	-	$	51,622
Liabilities
Foreign currency forward contracts	$	-	$	241	$	-	$	241
Total	$	-	$	241	$	-	$	241

	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
Foreign currency forward contracts	$	-	$	537	$	-	$	537
Total	$	-	$	537	$	-	$	537

Available-for-sale Securities [Table Text Block]

	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
June 30, 2016
Government securities
(Due within 1 year)	$	19,476	$	10	$	-		$	19,486
	$	19,476	$	10	$	-		$	19,486
December 31, 2015
Government securities
(Due within 1 year)	$	25,243	$	1	$	(12	)	$	25,232
	$	25,243	$	1	$	(12	)	$	25,232