Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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Allowance for Credit Losses and Credit Quality of Loans, Allowance for Credit Losses by Portfolio Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period	$ 120,500	$ 100,400	$ 114,400
Allowance for credit loss on PCD acquired loans		5,772
Charge-offs	(6,077)	(6,321)	(18,384)		$ (26,778)
Recoveries	2,157	2,117	6,086
Provision	2,920	12,633	17,398	$ 20,148
Balance, end of period	119,500	114,601	119,500	114,601	114,400
ASU 2022-02 [Member]
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period				100,152	100,152
Allowance for credit loss on PCD acquired loans				5,772
Charge-offs				(17,320)
Recoveries				5,849
Provision				20,148
Balance, end of period		114,601		114,601
Commercial Loans [Member]
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period	46,708	36,963	45,903
Allowance for credit loss on PCD acquired loans		5,300
Charge-offs	(1,117)	(138)	(2,401)
Recoveries	275	474	765
Provision	1,372	4,121	2,971
Balance, end of period	47,238	46,720	47,238	46,720	45,903
Commercial Loans [Member] \| ASU 2022-02 [Member]
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period				34,662	34,662
Allowance for credit loss on PCD acquired loans				5,300
Charge-offs				(514)
Recoveries				1,112
Provision				6,160
Balance, end of period		46,720		46,720
Consumer Loans [Member]
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period	47,918	47,883	46,427
Allowance for credit loss on PCD acquired loans		19
Charge-offs	(4,926)	(6,167)	(15,835)
Recoveries	1,789	1,549	4,999
Provision	835	3,990	10,025
Balance, end of period	45,616	47,274	45,616	47,274	46,427
Consumer Loans [Member] \| ASU 2022-02 [Member]
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period				50,951	50,951
Allowance for credit loss on PCD acquired loans				19
Charge-offs				(16,346)
Recoveries				4,367
Provision				8,283
Balance, end of period		47,274		47,274
Residential [Member]
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period	25,874	15,554	22,070
Allowance for credit loss on PCD acquired loans		453
Charge-offs	(34)	(16)	(148)		(517)
Recoveries	93	94	322
Provision	713	4,522	4,402
Balance, end of period	$ 26,646	20,607	$ 26,646	20,607	22,070
Residential [Member] \| ASU 2022-02 [Member]
Activity in allowance for credit losses by portfolio segment [Roll Forward]
Balance, beginning of period				14,539	$ 14,539
Allowance for credit loss on PCD acquired loans				453
Charge-offs				(460)
Recoveries				370
Provision				5,705
Balance, end of period		$ 20,607		$ 20,607