Note 2 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

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

	Three months ended March 31, 2012
Volatility		45.86	%
Expected life (years)		6.00
Risk-free interest rate		1.15	%
Dividend yield		-
Fair value	$	4.23

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

	Number of options			Weighted average exercise price		Weighted average remaining contractual life	Aggregate intrinsic value (in thousands)
Outstanding at December 31, 2011		7,371,304		$	12.48
Options granted		2,314,976			9.53
Options forfeited		(247,306	)		17.13
Options exercised		(8,077	)		5.91
Outstanding at March 31, 2012		9,430,897		$	11.64	8.73 years	$	30,229
Exercisable at March 31, 2012		3,255,916		$	8.37	7.83 years	$	17,679

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 March 31, 2012
Financial instruments:
Interest rate swap	$	—	$	272	$	—	$	272
Contingent consideration		—		—		1,265		1,265