Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Costs Related to Company's Stock-based Compensation Plan

The following costs related to the Company’s stock-based compensation plan are included in the unaudited consolidated statements of income:

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Cost of revenues	$	1,624	$	1,638	$	3,042	$	2,964
General and administrative expenses	3,112		2,781		4,680		5,756
Selling and marketing expenses	2,990		2,736		4,782		5,391
Total	$	7,726	$	7,155	$	12,504	$	14,111

Schedule of Stock Options Activity

Stock option activity under the Company’s stock-based compensation plans is shown below:

	Number of Options	Weighted-Average Exercise Price		Aggregate Intrinsic Value		Weighted-Average Remaining Contractual Life (Years)
Outstanding at December 31, 2019	98,161	$	23.39	$	4,522	1.86
Granted	—	—		—		—
Exercised	(41,422)	23.18		1,993		—
Forfeited	—	—		—		—
Outstanding at June 30, 2020	56,739	$	23.54	$	2,261	1.54
Vested and exercisable at June 30, 2020	56,739	$	23.54	$	2,261	1.54

Schedule of Restricted Stock and RSU Activity

Restricted stock and restricted stock unit activity under the Company’s stock-based compensation plans is shown below:

	Restricted Stock			Restricted Stock Units
	Number	Weighted Average Fair Value		Number	Weighted Average Fair Value
Outstanding at December 31, 2019*	27,384	$	48.72	913,094	$	59.61
Granted	—	—		392,287	77.01
Vested	—	—		(310,657)	56.59
Forfeited	—	—		(43,318)	63.87
Outstanding at June 30, 2020*	27,384	$	48.72	951,406	$	67.58

* As of June 30, 2020 and December 31, 2019 restricted stock units vested for which the underlying common stock is yet to be issued were 181,638 and 167,270, respectively.

Schedule of Performance Based Stock Awards Activity

Performance based restricted stock unit activity under the Company’s stock plans is shown below:

	Revenue Based PRSUs			Market Condition Based PRSUs
	Number	Weighted Average Fair Value		Number	Weighted Average Fair Value
Outstanding at December 31, 2019	87,685	$	62.54	87,670	$	82.10
Granted	61,368	78.29		61,352	102.10
Vested	—	—		—	—
Forfeited	(2,063)	62.24		(2,062)	80.33
Outstanding at June 30, 2020	146,990	$	69.12	146,960	$	90.47