Note 2 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2012

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

	Nine months ended September 30, 2012
Volatility		45.86	–	48.17	%
Expected life (years)			6.00
Risk-free interest rate		0.83	–	1.15	%
Dividend yield			–
Fair value	$	4.23	–	5.77

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

	Number of options			Weighted average exercise price		Weighted average remaining contractual life (years)		Intrinsic Value Aggregate (in thousands)
Outstanding at December 31, 2011		7,371,304		$	12.48
Options granted		2,662,101			9.89
Options forfeited		(156,963	)		8.03
Options exercised		(435,735	)		15.42
Outstanding at September 30, 2012		9,440,707		$	11.69		8.3	$	45,609
Exercisable at September 30, 2012		3,745,779		$	9.47		7.5	$	26,040

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, 2011
Financial instruments:
Interest rate swap	$	—	$	326	$	—	$	326
Contingent consideration		—		—		1,621		1,621
As of September 30, 2012
Financial instruments:
Interest rate swap	$	—	$	157	$	—	$	157
Contingent consideration		—		—		1,201		1,201