Consolidated Statements of Comprehensive Income/(Loss) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 12,564	$ 14,462	$ 27,259	$ 37,620
Other comprehensive income/(loss):
Unrealized gain/(loss) on effective cash flow hedges, net of taxes $693, ($3,573), $1,882 and ($4,373), respectively		2,595	(8,656)	7,343	(12,870)
Foreign currency translation gain/(loss)		604	(18,219)	3,284	(26,030)
Reclassification adjustments
(Gain)/loss on cash flow hedges, net of taxes $466, ($426), $820 and ($1,202), respectively	[1]	(324)	(1,041)	(1,349)	(2,936)
Retirement benefits, net of taxes ($19), ($3), $90 and ($2), respectively	[2]	(21)	(35)	(169)	(75)
Total other comprehensive income/(loss)		2,854	(27,951)	9,109	(41,911)
Total comprehensive income/(loss)		$ 15,418	$ (13,489)	$ 36,368	$ (4,291)

[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.