Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Summary of Change in Projected Benefit Obligation

The following table sets forth the activity and the funded status of the Gratuity Plans and the amounts recognized in the Company’s consolidated financial statements at the end of the relevant periods:

	As of
	December 31, 2017			December 31, 2016
Change in projected benefit obligation:
Projected benefit obligation at the beginning of the year	$	9,711		$	7,909
Service cost	1,933			1,601
Interest cost	645			599
Benefits paid	(1,001		)	(837		)
Actuarial (gain)/loss	(1,471		)	677
Acquisition	—			47
Effect of exchange rate changes	488			(285		)
Projected benefit obligation at the end of the year	$	10,305		$	9,711
Unfunded amount–non-current	$	3,377		$	1,977
Unfunded amount–current	13			2,094
Total accrued liability	$	3,390		$	4,071
Accumulated benefit obligation	$	7,022		$	6,533

Net Gratuity Cost

Net gratuity cost includes the following components:

	Year ended December 31,
	2017			2016			2015
Service cost	$	1,933		$	1,601		$	1,638
Interest cost	645			599			550
Expected return on plan assets	(401		)	(416		)	(385		)
Amortization of Actuarial loss	256			90			211
Net gratuity cost	$	2,433		$	1,874		$	2,014

Summary of Components Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive gain/(loss) (net of tax) that have not been recognized as components of net gratuity cost in the statement of income as of December 31, 2017 and 2016 are as follows:

	December 31,
	2017			2016
Net actuarial gain/(loss)	$	697		$	(831	)
Net prior service cost	(8		)	(9		)
Deferred taxes	74			342
Accumulated other comprehensive gain/(loss), net of tax	$	763		$	(498	)

Summary of Weighted Average Actuarial Assumptions

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

	December 31,
	2017		2016		2015
Discount rate	7.0	%	6.8	%	7.8	%
Rate of increase in compensation levels	9.1	%	9.2	%	8.4	%
Expected long term rate of return on plan assets per annum	8.3	%	9.0	%	9.0	%

Summary of Expected Benefit Payments

Expected benefit payments during the year ending December 31,
2018	$	2,011
2019	$	1,772
2020	$	1,531
2021	$	1,302
2022	$	1,029
2023 to 2027	$	3,206

Change in Plan Assets

Change in Plan Assets
Plan assets at January 1, 2016	$	4,923
Actual return	450
Employer contribution	1,242
Benefits paid*	(837		)
Effect of exchange rate changes	(138		)
Plan Assets at December 31, 2016	$	5,640
Actual return	202
Employer contribution	1,700
Benefits paid*	(1,001		)
Effect of exchange rate changes	374
Plan assets at December 31, 2017	$	6,915

* All benefits payments were made through the plan assets during the year ended December 31, 2017 and December 31, 2016.