Loans and Allowance for Loan Losses - Schedule of Rollforward of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Allowance for loan losses:
Beginning balance	$ 478,207	$ 492,661	$ 486,845	$ 479,385	$ 479,385
Charge-offs	(34,413)	(42,291)	(61,560)	(92,859)	(160,948)
Recoveries	16,112	7,806	21,893	14,018
Provision for (reversal of) loan losses	4,925	26,925	17,653	84,557
Ending balance	464,831	485,101	464,831	485,101	486,845
Commercial & Industrial
Allowance for loan losses:
Beginning balance	205,903	213,482	210,525	218,970	218,970
Charge-offs	(16,227)	(34,379)	(26,581)	(72,322)
Recoveries	12,742	4,589	15,712	7,877
Provision for (reversal of) loan losses	2,822	37,038	5,584	66,205
Ending balance	205,240	220,730	205,240	220,730	210,525
Commercial Real Estate
Allowance for loan losses:
Beginning balance	126,220	152,627	134,021	133,758	133,758
Charge-offs	(9,402)	(263)	(18,827)	(3,974)
Recoveries	1,068	462	1,119	1,229
Provision for (reversal of) loan losses	(147)	(11,146)	1,426	10,667
Ending balance	117,739	141,680	117,739	141,680	134,021
Total consumer
Allowance for loan losses:
Beginning balance	146,084	126,552	142,299	126,657	126,657
Charge-offs	(8,784)	(7,649)	(16,152)	(16,563)
Recoveries	2,302	2,755	5,062	4,912
Provision for (reversal of) loan losses	2,250	1,033	10,643	7,685
Ending balance	$ 141,852	$ 122,691	$ 141,852	$ 122,691	$ 142,299

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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