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Stock-Based Compensation and Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following table sets forth the weighted-average stock option fair values and assumptions:

			Years Ended December 31,
			2021						2020						2019
Weighted-average fair value			N/A						$	6.97					$	10.24
Dividend yield			N/A						—						—
Volatility			N/A						52.06		%				39.37		%
Risk-free interest rate			N/A						0.30		%				1.68		%
Expected life (in years)			N/A						4.82						4.47

Schedule of Stock Option Activity

The following tables reflect changes in the Company's outstanding stock-based compensation awards for the years ended December 31, 2021 and 2020:

			2021
			Number of Stock Option Awards						Weighted- Average Exercise Price						Weighted- Average Remaining Contractual Term (years)						Aggregate Intrinsic Value (in thousands)
Outstanding stock option awards at January 1			4,278,160						$	11.20					8.36						$	9,855
Granted			—						—						—						—
Exercises (net cash settled)			—						—						—						—
Exercises (issuance of shares)			(446,344)						7.69						5.91						8,459
Forfeitures/expirations			(98,002)						13.01						8.52						2,078
Outstanding stock option awards as of December 31, 2021			3,733,814						$	11.59					7.52						$	110,298
Options exercisable as of December 31			1,293,492						$	8.61					6.78						$	42,060

			2020
			Number of Stock Option Awards						Weighted- Average Exercise Price						Weighted- Average Remaining Contractual Term (years)						Aggregate Intrinsic Value (in thousands)
Outstanding stock option awards at January 1			5,875,829						$	9.29					8.15						$	42,434
Granted			872,003						11.90						9.87						1,393
Exercises (net cash settled)			(130,017)						3.68						5.74						896
Exercises (issuance of shares)			(2,143,317)						3.69						5.77						15,511
Forfeitures/expirations			(196,338)						13.22						8.64						(146)
Outstanding stock option awards at December 31, 2020			4,278,160						$	11.20					8.36						$	9,855
Options exercisable as of December 31			992,061						$	4.28					5.81						$	9,151

Share-based Payment Arrangement, Cost by Plan

The following table sets forth stock-based compensation expense (benefit), including the effects of gains and losses from changes in fair value during the years ended December 31, 2021, 2020 and 2019, recognized by the Company in the following line items in the Company's consolidated statements of operations and comprehensive income during the periods presented:

			Years Ended December 31,
(in thousands)			2021						2020						2019
Cost of services			$	380					$	(72)					$	381
Sales and marketing			3,490						266						1,649
General and administrative			4,224						(3,089)						12,089
Stock-based compensation expense (benefit)			$	8,094					$	(2,895)					$	14,119

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Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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