Stock Options And Employee Stock Purchase Plan (Tables)

9 Months Ended

Sep. 30, 2014

The following table represents stock option activity for the nine months ended September 30, 2014:



	Number of Shares		Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding at January 1, 2014	1,175,657		$	21.21
Granted	—		—
Exercised	(424,706	)	15.59
Canceled	(15,000	)	31.07
Outstanding at September 30, 2014	735,951		24.25		4.1	$	18,476,543
Exercisable at September 30, 2014	623,739		23.72		3.7	$	15,991,979
Vested and expected to vest at September 30, 2014	721,497		$	24.19	4.1	$	18,163,534

Allocation Of Share-Based Compensation Expense

The following table represents share-based compensation expense included in cost of revenues and operating expenses in the accompanying condensed consolidated statements of income for the three and nine months ended September 30, 2014 and 2013 (in thousands):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Cost of revenues	$	82	$	162	$	263	$	581
Operating expenses:
Sales and marketing	443		465		1,360		1,315
Research, development and engineering	175		103		537		311
General and administrative	1,491		1,695		4,378		4,901
Total	$	2,191	$	2,425	$	6,538	$	7,108

Restricted Stock [Member]

Restricted Stock And Restricted Stock Unit Award Activity

Restricted stock award activity for the nine months ended September 30, 2014 is set forth below:



	Shares		Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2014	1,178,371		$	18.17
Granted	176,864		44.65
Vested	(452,010	)	17.66
Canceled	(45,070	)	35.55
Nonvested at September 30, 2014	858,155		$	22.98

Restricted Stock Units (RSUs) [Member]

Restricted Stock And Restricted Stock Unit Award Activity

Restricted stock unit award activity for the nine months ended September 30, 2014 is set forth below:



	Number of Shares		Weighted-Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value
Outstanding at January 1, 2014	109,725
Granted	16,737
Vested	(16,258	)
Canceled	(15,000	)
Outstanding at September 30, 2014	95,204		2.0	$	4,699,269
Vested and expected to vest at September 30, 2014	74,330		1.8	$	3,668,909