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Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense

The table below reflects the total share-based compensation expense recognized in our Consolidated Statements of Comprehensive Income for the years ended December 31, 2022, 2021 and 2020:

						Year Ended December 31,
Income Statement Classification						2022						2021						2020
Direct cost of revenues						$	15,312					$	13,432					$	13,089
Selling, general and administrative expenses						12,416						14,148						12,052
Total						$	27,728					$	27,580					$	25,141

Schedule of Stock Option Activity

A summary of our stock option activity during the year ended December 31, 2022 is presented below. The aggregate intrinsic value of stock options outstanding and exercisable, or fully vested, at December 31, 2022 in the table below represents the total pre-tax intrinsic value, which is calculated as the difference between the closing price of our common stock on the last trading day of 2022 and the exercise price, multiplied by the number of in-the-money options that would have been received by the option holders had all option holders exercised their options on December 31, 2022. The aggregate intrinsic value changes based on fluctuations in the fair market value per share of our common stock. 

			Options						Weighted Average Exercise Price						Weighted Average Remaining Contractual Term (in Years)						Aggregate Intrinsic Value
Stock options outstanding at December 31, 2021			460						$	36.45
Stock options exercised			(68)						$	33.92
Stock options outstanding and exercisable at December 31, 2022			392						$	36.89					2.8						$	47,807

Schedule of Unvested Restricted Share Awards Activity

A summary of our restricted share awards activity during the year ended December 31, 2022 is presented below:

			Shares						Weighted Average Grant Date Fair Value
Restricted share awards outstanding at December 31, 2021			782						$	76.82
Restricted share awards granted			190						$	159.43
Restricted share awards vested			(269)						$	60.43
Restricted share awards forfeited			(19)						$	60.31
Restricted share awards outstanding at December 31, 2022			684						$	106.63

Schedule of Restricted Stock Unit Activity

A summary of our restricted stock units activity during the year ended December 31, 2022 is presented below:

			Shares						Weighted Average Grant Date Fair Value
Restricted stock units outstanding at December 31, 2021			321						$	62.60
Restricted stock units granted			51						$	158.32
Restricted stock units released			(44)						$	62.05
Restricted stock units outstanding at December 31, 2022			328						$	77.66

Schedule of Performance Stock Units Activity

A summary of our performance stock units activity during the year ended December 31, 2022 is presented below:

			Shares						Weighted Average Grant Date Fair Value
Performance stock units outstanding at December 31, 2021			269						$	118.27
Performance stock units granted (1)			103						$	154.02
Performance stock units released			(100)						$	92.43
Performance stock units forfeited (2)			(27)						$	131.58
Performance stock units outstanding at December 31, 2022			245						$	143.44

(1)    Performance stock units granted are presented at the maximum potential payout percentage of 150% of target shares granted.

(2)    Performance stock units are forfeited when the market or performance conditions for maximum payout are not achieved, including performance stock units that do not achieve any payout, or the employee is terminated prior to vesting.

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