Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 14,695	$ 23,158
Other comprehensive income/(loss):
Unrealized gain/(loss) on effective cash flow hedges, net of taxes $1,189 and ($800), respectively		4,748	(4,214)
Foreign currency translation gain/(loss)		2,680	(7,811)
Reclassification adjustments
Gain on cash flow hedges, net of taxes $354 and ($776), respectively	[1]	(1,025)	(1,895)
Retirement benefits, net of taxes $109 and $1, respectively	[2]	(148)	(40)
Total other comprehensive income/(loss)		6,255	(13,960)
Total comprehensive income		$ 20,950	$ 9,198

[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 Note 17 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 Note 20 to the unaudited consolidated financial statements.