CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 65,101	$ 74,199	$ 124,015	$ 216,556
Other comprehensive (loss) income, net of tax:
Net change in pensions and other benefits			(96)	(594)
Net change in investment securities	(1,477)	13,210	83,099	114,015
Other comprehensive (loss) income	(1,477)	13,210	83,003	113,421
Total comprehensive income	$ 63,624	$ 87,409	$ 207,018	$ 329,977