CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net Income (Loss)	$ 234,983	$ 265,685	$ 265,735
Other comprehensive income (loss), net of tax:
Net change in pensions and other benefits	(58)	(18,959)	(7,347)
Net change in investment securities	105,087	(531,818)	(160,644)
Net change in cash flow derivative hedges	3,899	(4,702)
Other comprehensive income (loss)	109,044	(517,561)	(153,297)
Total comprehensive income (loss)	$ 344,027	$ (251,876)	$ 112,438