CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 119,561	$ 232,177	$ 199,759
Other comprehensive income (loss), net of tax:
Net change in fair value of securities available for sale	368	295,913	(821,570)
Net change in fair value of cash flow hedges	5,101	18,588	(57,520)
Net change in other comprehensive income for defined benefit postretirement plans	18,554	339	12,594
Total other comprehensive income (loss)	24,023	314,840	(866,496)
Total comprehensive income (loss)	$ 143,584	$ 547,017	$ (666,737)