Note 2 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

			Fair Value Measurements at Reporting Date, Using:
Description	September 30, 2014		Quoted Prices in Active Markets for Identical Items (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	131,466	$	131,466	$	—	$	—
Available-for-sale securities		12,458		—		—		12,458
Foreign currency forward contracts		279		—		279		—
Total assets	$	144,203	$	131,466	$	279	$	12,458
Purchase consideration payable	$	20,860	$	—	$	—	$	20,860
Total liabilities	$	20,860	$	—	$	—	$	20,860

Description	December 31, 2013		Quoted Prices in Active Markets for Identical Items (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	34,178	$	34,178	$	—	$	—
Foreign currency forward contracts		208		—		208		—
Total assets	$	34,386	$	34,178	$	208	$	—
Purchase consideration payable	$	14,728	$	—	$	—	$	14,728
Total liabilities	$	14,728	$	—	$	—	$	14,728