Components of Accumulated Other Comprehensive Income - Summary of Components (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated other comprehensive income (net of tax)
Shareholders’ equity	$ 1,491,486	$ 1,583,571	$ 1,538,703	$ 1,353,285
Unrealized gain/(loss) on marketable securities available-for-sale
Accumulated other comprehensive income (net of tax)
Shareholders’ equity	(164,206)	(12,317)	16,843	3,147
Defined benefit pension plans
Accumulated other comprehensive income (net of tax)
Shareholders’ equity	(6,952)	(25,312)	(50,392)	(40,088)
Accumulated other comprehensive loss
Accumulated other comprehensive income (net of tax)
Shareholders’ equity	$ (171,158)	$ (37,629)	$ (33,549)	$ (36,941)