CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 39,481	$ 38,395	$ 112,497	$ 68,639
Other comprehensive income (loss):
Change in net unrealized gain (loss) during the period	(39,692)	(8,654)	(142,980)	(15,222)
Reclassification adjustment for net gains included in net gain on sale of securities and other assets				(1,207)
Accretion of net unrealized loss on securities transferred to held to maturity	1,112		2,111
Change in pension and other postretirement obligations:
Reclassification adjustment for expense included in other expense	(935)	(735)	(2,805)	(1,595)
Reclassification adjustment for curtailment loss				1,543
Change in the net actuarial gain	997	941	2,992	2,470
Change in unrealized gain (loss) on derivatives:
Change in net unrealized gain (loss) during the period	5,387	225	14,548	3,767
Reclassification adjustment for loss included in loss on termination of derivatives				16,505
Reclassification adjustment for expense included in interest expense	(546)	38	(569)	902
Other comprehensive (loss) income before income taxes	(33,677)	(8,185)	(126,703)	7,163
Deferred tax (benefit) expense	(10,591)	(2,567)	(39,848)	2,281
Total other comprehensive (loss) income, net of tax	(23,086)	(5,618)	(86,855)	4,882
Total comprehensive income	$ 16,395	$ 32,777	$ 25,642	$ 73,521