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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

Stockholders' Equity

Schedule of key assumptions to determine fair value of options

		Year Ended December 31,
		2015		2014		2013
Average volatility		27.1	%	29.9	%	28.6	%
Risk-free interest rate		1.3	%	1.7	%	1.3	%
Weighted-average expected life in years		4.5		5.0		4.5
Dividend yield rate		—	%	—	%	—	%

Schedule of the summary of option activity under all plans

A summary of option activity under all plans for the year ended December 31, 2015 is presented below:

							Weighted-Average
				Weighted-Average			Remaining		Aggregate
				Exercise			Contractual		Intrinsic
		Options		Price			Term (Years)		Value(1)
									(in thousands)
Outstanding as of December 31, 2014		11,371,891		$	15.12
Options granted		2,281,786			15.70
Options exercised		(1,262,663)			13.06
Options cancelled		(73,229)			13.27
Options expired		(77,318)			22.26
Outstanding as of December 31, 2015		12,240,467		$	15.41		4.35		$	14,438
Exercisable as of December 31, 2015		7,038,372		$	16.31		3.41		$	9,940

⁽¹⁾ The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the estimated fair value of the Company’s common stock for those awards that have an exercise price below the estimated fair value at December 31, 2015.

A summary of option activity under all plans for the year ended December 31, 2014 is presented below:

							Weighted-Average
				Weighted-Average			Remaining		Aggregate
				Exercise			Contractual		Intrinsic
		Options		Price			Term (Years)		Value(1)
									(in thousands)
Outstanding as of December 31, 2013		10,771,755		$	15.39
Options granted		1,661,862			15.04
Options exercised		(65,000)			10.79
Options cancelled		(135,398)			15.74
Options expired		(861,328)			18.48
Outstanding as of December 31, 2014		11,371,891		$	15.12		4.62		$	1,815
Exercisable as of December 31, 2014		6,281,300		$	16.95		3.54		$	871

⁽¹⁾ The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the estimated fair value of the Company’s common stock for those awards that have an exercise price below the estimated fair value at December 31, 2014.

Schedule of information relating to options grants

		Year Ended December 31,
		2015			2014			2013
		(in thousands, except per share data)
Weighted-average grant date fair value		$	3.45		$	4.02		$	2.79
Intrinsic value of options exercised			3,247			144			—
Cash received			13,502			571			55
Total fair value of the options vested during the year			6,634			6,407			6,067

Schedule of the summary of nonvested options status

A summary of the status of the Company’s nonvested options as of December 31, 2015, and changes during the year ended December 31, 2015, are presented below:

				Weighted-Average
				Grant Date
		Options		Fair Value
Nonvested as of December 31, 2014		5,090,591		$	3.34
Options granted		2,281,786			3.45
Options vested		(2,097,053)			3.16
Options forfeited		(73,229)			4.61
Nonvested as of December 31, 2015		5,202,095			3.44

A summary of the status of the Company’s nonvested options as of December 31, 2014, and changes during the year ended December 31, 2014, are presented below:

				Weighted-Average
				Grant Date
		Options		Fair Value
Nonvested as of December 31, 2013		5,617,554		$	3.12
Options granted		1,661,862			4.02
Options vested		(2,053,427)			3.12
Options forfeited		(135,398)			5.60
Nonvested as of December 31, 2014		5,090,591			3.34

Schedule of information relating to RSU grants and deliveries

				Total Fair Market
				Value of RSUs
				Issued
		Total RSUs		as
		Issued		Compensation(1)
				(in thousands)
RSUs outstanding at December 31, 2013		98,495
RSUs granted		456,406		$	6,474
RSUs forfeited		(994)
RSUs surrendered for taxes		(10,670)
Common stock delivered for RSUs		(40,227)
RSUs outstanding at December 31, 2014		503,010
RSUs granted		526,707		$	7,888
RSUs forfeited		(8,711)
RSUs surrendered for taxes		(58,909)
Common stock delivered		(95,557)
RSUs outstanding at December 31, 2015		866,540

⁽¹⁾ The total FMV is derived from the number of RSUs granted times the current stock price on the date of grant.

Schedule of recorded share-based compensation expense under all plans

		Year Ended December 31,
		2015			2014			2013
		(in thousands)
Cost of revenues		$	2,526		$	1,678		$	1,503
Operating expenses:
Selling, distribution and marketing			192			137			132
General and administrative			9,185			6,800			4,701
Research and development			912			665			699
Total share-based compensation		$	12,815		$	9,280		$	7,035

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