Stock Options And Employee Stock Purchase Plan (Tables)

6 Months Ended

Jun. 30, 2014

The following table represents stock option activity for the six months ended June 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	(368,886	)	14.71
Canceled	(15,000	)	31.07
Outstanding at June 30, 2014	791,771		24.05		4.4	$	21,226,157
Exercisable at June 30, 2014	666,357		23.46		3.9	$	18,256,962
Vested and expected to vest at June 30, 2014	774,450		$	23.97	4.3	$	20,823,380

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 six months ended June 30, 2014 and 2013 (in thousands):



	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Cost of revenues	$	27	$	205	$	181	$	419
Operating expenses:
Sales and marketing	426		432		917		850
Research, development and engineering	222		102		362		208
General and administrative	1,288		1,596		2,887		3,206
Total	$	1,963	$	2,335	$	4,347	$	4,683

Restricted Stock [Member]

Restricted Stock And Restricted Stock Unit Award Activity

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



	Shares		Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2014	1,178,371		$	17.86
Granted	176,864		44.65
Vested	(405,535	)	16.23
Canceled	(15,509	)	33.66
Nonvested at June 30, 2014	934,191		$	23.38

Restricted Stock Units (RSUs) [Member]

Restricted Stock And Restricted Stock Unit Award Activity

Restricted stock unit award activity for the six months ended June 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	(10,858	)
Canceled	(15,000	)
Outstanding at June 30, 2014	100,604		2.1	$	5,116,719
Vested and expected to vest at June 30, 2014	79,246		1.9	$	4,030,433