Derivatives and Hedge Accounting (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Fair Value of Foreign Currency Exchange Contracts

The following tables set forth the fair value of the foreign currency exchange contracts and their location on the consolidated balance sheets:

Derivatives designated as hedging instruments :	As of
Foreign currency exchange contracts	December 31, 2018		December 31, 2017
Other current assets	$	4,022	$	10,892
Other assets	$	1,971	$	7,360
Accrued expense and other current liabilities	$	3,137	$	481
Other non-current liabilities	$	3,075	$	322
Derivatives not designated as hedging instruments :	As of
Foreign currency exchange contracts	December 31, 2018		December 31, 2017
Other current assets	$	37	$	46
Accrued expense and other current liabilities	$	67	$	74

Summary of Effect of Foreign Currency Exchange Contracts on Consolidated Statements of Income

Derivatives designated as hedging instruments :	As of
Foreign currency exchange contracts	December 31, 2018		December 31, 2017
Other current assets	$	4,022	$	10,892
Other assets	$	1,971	$	7,360
Accrued expense and other current liabilities	$	3,137	$	481
Other non-current liabilities	$	3,075	$	322
Derivatives not designated as hedging instruments :	As of
Foreign currency exchange contracts	December 31, 2018		December 31, 2017
Other current assets	$	37	$	46
Accrued expense and other current liabilities	$	67	$	74

The following tables set forth the effect of foreign currency exchange contracts on the consolidated statements of income and accumulated other comprehensive loss for the years ended December 31, 2018, 2017 and 2016:    

	Year ended December 31,
Forward exchange contracts :	2018			2017		2016
(Loss)/gain recognized in AOCI
Derivatives in cash flow hedging relationships	$	(13,919	)	$	19,802	$	5,129
(Loss)/gain recognized in consolidated statements of income
Derivatives not designated as hedging instruments	$	(3,224	)	$	5,056	$	4,790

Location and amount of gain/(loss) recognized in consolidated statements of income for cash flow hedging relationships and derivatives not designated as hedging instruments
	Year ended December 31,
	2018					2017				2016
	As per consolidated statements of income		Gain/(loss) on foreign currency exchange contracts			As per consolidated statements of income		Gain/(loss) on foreign currency exchange contracts		As per consolidated statements of income		Gain/(loss) on foreign currency exchange contracts
Cash flow hedging relationships
Location in consolidated statements of income where gain/(loss) was reclassed from AOCI
Cost of revenues	$	584,855	$	2,481		$	495,142	$	5,465	$	447,718	$	—
General & administrative expenses	$	116,202	$	443		$	102,515	$	960	$	88,616	$	—
Selling & marketing expenses	$	63,612	$	44		$	53,379	$	103	$	50,579	$	—
Depreciation & amortization	$	48,566	$	181		$	38,549	$	371	$	34,580	$	—
Foreign exchange gain/(loss), net	$	4,787	$	—		$	2,839	$	—	$	5,597	$	2,669
			$	3,149				$	6,899			$	2,669
Derivatives not designated as hedging instruments
Location in consolidated statements of income where gain/(loss) was recognized
Foreign exchange gain/(loss), net	$	4,787	$	(3,224	)	$	2,839	$	5,056	$	5,597	$	4,790
	$	4,787	$	(3,224	)	$	2,839	$	5,056	$	5,597	$	4,790