Consolidated Statements of Comprehensive (Loss)/Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income		$ 22,411	$ 14,695
Other comprehensive (loss)/income:
Unrealized (loss)/gain on cash flow hedges		(14,846)	5,937
Foreign currency translation (loss)/gain		(17,337)	2,680
Reclassification adjustments
Gain on cash flow hedges	[1]	(929)	(671)
Retirement benefits	[2]	101	(39)
Income tax (expense)/benefit relating to above	[3]	4,799	(1,652)
Total other comprehensive (loss)/income		(28,212)	6,255
Total comprehensive (loss)/income		$ (5,801)	$ 20,950

[1] These are reclassified to net income and are included either in cost of revenues or operating expenses, as applicable in the unaudited consolidated statements of income. Refer to Note 16 to the unaudited consolidated financial statements.

[2] These are reclassified to net income and are included in other income, net in the unaudited consolidated statements of income. Refer to Note 19 to the unaudited consolidated financial statements.

[3] These are income tax benefit/(expense) recognized on cash flow hedges and retirement benefits. Refer to Note 21 to the unaudited consolidated financial statements.