Other Comprehensive Income (Loss) - Accumulated Balances for Each Component of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shareholders’ equity	$ 2,678,318	$ 2,297,383	$ 2,136,016	$ 2,209,853
Total accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shareholders’ equity	(142,608)	(154,256)	(209,037)	$ (10,443)
Unrealized losses on securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shareholders’ equity	(152,934)	(163,484)	(219,766)
Unrealized gains on derivative instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shareholders’ equity	17,429	17,051	18,956
Unrecognized losses on defined benefit pension and post-retirement benefit plans obligations
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shareholders’ equity	$ (7,103)	$ (7,823)	$ (8,227)