Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Summary of Change in Projected Benefit Obligation

Change in projected benefit obligation, was as follows:

	2021		2020
Projected benefit obligation as of January 1	$	20,466	$	15,311
Service cost	3,512		2,706
Interest cost	929		964
Benefits paid	(1,844)		(878)
Acquisition adjustments	209		—
Actuarial loss*	539		2,425
Effect of exchange rate changes	(540)		(62)
Projected benefit obligation as of December 31	$	23,271	$	20,466
Unfunded amount-non-current	$	9,604	$	8,940
Unfunded amount-current	62		14
Total accrued liability	$	9,666	$	8,954
Accumulated benefit obligation	$	14,794	$	12,490
Accumulated benefit obligation in excess of plan assets	$	1,189	$	978

*During the year ended December 31, 2021, actuarial loss was driven by experience adjustments on present value of benefit obligations offset by changes in actuarial assumptions. During the year ended December 31, 2020, actuarial loss was driven by changes in actuarial assumptions, offset by experience adjustments on present value of benefit obligations.

Components of Net Periodic Benefit Costs

Components of net periodic benefit costs, were as follows:

	Year ended December 31,
	2021		2020		2019
Service cost	$	3,512	$	2,706	$	1,953
Interest cost	929		964		875
Expected return on plan assets	(796)		(636)		(568)
Amortization of actuarial (gain)/loss, gross of tax	709		394		(159)
Net gratuity cost	$	4,354	$	3,428	$	2,101
Income tax effects on amortization of actuarial (gain)/loss	(204)		(127)		16
Amortization of actuarial (gain)/loss, net of tax	$	505	$	267	$	(143)

Summary of Components of Actuarial Gain/(Loss)

The components of actuarial gain/(loss) on retirement benefits included in accumulated other comprehensive income/(loss), excluding tax effects, were as follows:

	As of December 31,
	2021		2020		2019
Net actuarial loss	$	(3,624)	$	(3,772)	$	(1,762)
Net prior service cost	(12)		(15)		(18)
Accumulated other comprehensive income/(loss), excluding tax effects	$	(3,636)	$	(3,787)	$	(1,780)

Summary of Weighted Average Actuarial Assumptions

The weighted average actuarial assumptions used to determine benefit obligations and net gratuity cost were:

	December 31,
	2021		2020		2019
Discount rate	5.6	%	4.6	%	6.5	%
Rate of increase in compensation levels	7.6	%	7.1	%	6.0	%
Expected long-term rate of return on plan assets per annum	6.8	%	7.0	%	7.5	%

Summary of Expected Benefit Payments

Expected benefit payments during the year ending December 31,
2022	$	3,165
2023	$	2,979
2024	$	2,738
2025	$	2,464
2026	$	2,162
2027 to 2031	$	8,006

Change in Plan Assets

Change in Plan Assets
Plan assets at January 1, 2020	$	8,784
Actual return	661
Employer contribution	3,099
Benefits paid*	(869)
Effect of exchange rate changes	(163)
Plan assets at December 31, 2020	$	11,512
Actual return	777
Employer contribution	3,361
Benefits paid*	(1,835)
Effect of exchange rate changes	(210)
Plan assets at December 31, 2021	$	13,605

* Benefits payments were substantially made from the plan assets during the year.

Schedule of Company's Contribution Plan

The Company's accrual for contributions to the 401(k) Plans were as follows:

	Year ended December 31,
	2021		2020		2019
Contribution to the 401(k) Plans	$	3,693	$	3,577	$	3,617

The Company's contribution for various defined benefit plans on behalf of employees in India, the Philippines, the Czech Republic, South Africa, Canada, Colombia, Australia and Singapore were as follows:

	Year ended December 31,
	2021		2020		2019
Contribution to the defined benefit plans	$	16,340	$	11,332	$	10,614