STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2014

The following costs related to the Company’s stock compensation plans were included in the unaudited consolidated statements of income:

	Three Months Ended March 31,
	2014		2013
Cost of revenues	$	1,403	$	779
Selling, general and administrative expenses		1,805		1,797
Total	$	3,208	$	2,576

Stock option activity under the Company’s plans is set forth below:

	Number of Options			Weighted Average Exercise Price		Aggregate Intrinsic Value
Options outstanding at January 1, 2014		5,823,536		$	13.99	$	122,003
Options granted		2,311,000			32.14		1,756
Options exercised		(323,592	)		6.75		(8,462	)
Options forfeited/cancelled		(58,741	)		18.17		(865	)
Options outstanding at March 31, 2014		7,752,203		$	19.67	$	102,562
Options vested and exercisable at March 31, 2014		3,008,362		$	9.76	$	69,613
Options expected to vest		4,269,150		$	25.72	$	30,670

Summary of restricted stock activity as of March 31, 2014, and changes during the three months then ended is presented below:

	Number of Shares			Weighted Average Grant Date Fair Value Per Share
Unvested restricted stock outstanding at January 1, 2014		344,928		$	18.74
Restricted stock granted		2,289			36.57
Restricted stock vested		(3,520	)		14.67
Unvested restricted stock outstanding at March 31, 2014		343,697		$	18.90