CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income		$ 114,758	$ 89,476	$ 67,659
Other comprehensive income/(loss):
Unrealized gain on cash flow hedges		4,663	12,665	8,773
Loss on net investment hedges		(1,134)	0	0
Foreign currency translation loss		(11,134)	(540)	(2,842)
Retirement benefits		(558)	(2,401)	(2,539)
Reclassification adjustments:
Gain on cash flow hedges	[1]	(9,264)	(801)	(3,951)
Retirement benefits	[2]	709	394	(159)
Income tax effects relating to above	[3]	2,228	591	(707)
Total other comprehensive income/(loss)		(14,490)	9,908	(1,425)
Total comprehensive income		$ 100,268	$ 99,384	$ 66,234

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

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

[3] These are income tax effects recognized on cash flow hedges, retirement benefits and foreign currency translation gains/(losses). Refer to Note 21 - Income Taxes to the consolidated financial statements.