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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 20,815	$ 6,859	$ 57,567	$ 25,102
Other comprehensive (loss) income, net of tax:
Net change in unrealized (loss) gain on investment securities	(6,852)	(2,257)	(22,426)	14,165
Defined benefit plans	193	247	565	967
Total other comprehensive (loss) income, net of tax	(6,659)	(2,010)	(21,861)	15,132
Comprehensive income	$ 14,156	$ 4,849	$ 35,706	$ 40,234

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