CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 184,558	$ 142,968	$ 114,758
Other comprehensive income/(loss):
Unrealized gain/(loss) on cash flow hedges		14,403	(27,333)	4,663
Losses on net investment hedges		0	0	(1,134)
Foreign currency translation gain/(loss)		652	(47,734)	(11,134)
Retirement benefits		1,337	2,574	(558)
Reclassification adjustments:
Gain on cash flow hedges	[1]	5,208	1,295	(9,264)
Retirement benefits	[2]	(94)	592	709
Income tax effects relating to above	[3]	(4,403)	15,937	2,228
Total other comprehensive income/(loss)		17,103	(54,669)	(14,490)
Total comprehensive income		$ 201,661	$ 88,299	$ 100,268

[1] These are reclassified to net income and are included in cost of revenues, operating expenses and interest expense, as applicable in the consolidated statements of income.

[2] These are reclassified to net income and are included in other income/(expense), net in the consolidated statements of income.

[3] These are income tax effects recognized on cash flow hedges, retirement benefits and foreign currency translation gain/(loss).