Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

Stock-Based Compensation

Schedule of stock compensation expense recognized

Stock compensation expense recognized by the Company for the three months ended March 31, 2013 and 2014 was follows (in thousands):

	Three months ended March 31,
	2014		2013
Stock option awards	$	1,596	$	490
Restricted stock awards		65		803
RSUs		2,111		364
Total recognized stock-based compensation expense	$	3,772	$	1,657

Summary of assumptions used for estimating the fair value of stock options granted

	Three months ended March 31,
	2014				2013
Risk-free interest rate	1.8%	-	2.0%		1.0%	-	1.1%
Expected life	6.0	-	6.3	years	6.0		years
Expected volatility	53%	-	54%				55%
Dividend yield			0%				0%
Weighted-average grant date fair value		$	3.59			$	4.74

Schedule of summary of option activity

				Weighted-
				Average
				Remaining	Aggregate
		Weighted-		Contractual	Intrinsic
		Average		Term	Value
	Number	Exercise Price		(in years)	(in thousands)
Options outstanding at January 1, 2014	7,665,097	$	5.28
Granted	2,232,935		6.81
Exercised	(385,313)		2.69
Forfeited	(1,391,130)		6.56
Options outstanding at March 31, 2014	8,121,589	$	5.60	8.28	$	14,417
Options exercisable at March 31, 2014	3,046,974	$	3.30	5.91	$	12,133
Options vested and expected to vest at March 31, 2014	7,869,720	$	5.61	8.00	$	13,970

Summary of RSU activity

		Weighted-Average
		Grant Date
	Number	Fair Value
RSUs outstanding at January 1, 2014	1,177,288	$	7.80
Granted	965,212		6.92
Vested	(207,474)		7.57
Forfeited	-		-
RSUs outstanding at March 31, 2014	1,935,026		7.39