Note 2 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

	Three Months Ended March 31, 2015
Net income	$	2,024
Weighted average basic shares outstanding:
Common stock		40,418
Weighted average diluted shares outstanding:
Common stock		40,418
Dilutive securities		2,262
Total		42,680

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2015
Volatility		48.59	%
Expected life (years)		6.00
Risk-free interest rate		2.01	%
Dividend yield		—
Fair value	$	19.37

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Number of options			Weighted average exercise price		Weighted average remaining contractual life (years)		Aggregate intrinsic value (in thousands)
Outstanding at December 31, 2014		4,965,947		$	12.96
Options granted		30,000			40.22
Options forfeited		(15,000	)		25.44
Options exercised		(630,820	)		14.04
Outstanding at March 31, 2015		4,350,127		$	12.95
Exercisable at March 31, 2015		3,745,257		$	10.26		5.9	$	117,454

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

	Number of awards			Weighted average grant date fair value
Non-vested awards at December 31, 2014		880,433		$	25.46
Awards granted		612,637			40.54
Awards vested		(176,848	)		18.00
Awards forfeited		(7,880	)		30.46
Non-vested awards at March 31, 2015		1,308,342		$	33.50

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

	Level 1		Level 2			Level 3			Total
As of December 31, 2014
Financial instruments:
Contingent consideration	$	—	$	—		$	(6,587	)	$	(6,587	)
Foreign currency derivative asset		—		272			—			272
As of March 31, 2015
Financial instruments:
Contingent consideration	$	—	$	—		$	(4,393	)	$	(4,393	)
Foreign currency derivative liability		—		(159	)		—			(159	)
Foreign currency derivative asset		—		958			—			958

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Foreign Currency Translation			Net investment hedge - foreign exchange contract			Net investment hedge - Australian denominated debt		Total
Balance at December 31, 2014	$	(18,026	)	$	3,445		$	205	$	(14,376	)
Change during 2015:
Before-tax amount		(13,310	)		5,339			—		(7,971	)
Tax (expense) benefit		4,207			(2,113	)		—		2,094
Total activity in 2015		(9,103	)		3,226			—		(5,877	)
Balance at March 31, 2015	$	(27,129	)	$	6,671		$	205	$	(20,253	)