CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 265,735	$ 185,754	$ 284,392
Other comprehensive (loss) income, net of tax:
Net change in pensions and other benefits	7,347	(3,655)	297
Net change in investment securities	(160,644)	67,008	100,149
Other comprehensive (loss) income	(153,297)	63,353	100,446
Total comprehensive income	$ 112,438	$ 249,107	$ 384,838