Loans and Allowance for Loan Losses - Schedule of Allowances For Loan Losses and Recorded Investment In Loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Allowance for loan losses:
Beginning balance	$ 492,661	$ 457,010	$ 479,385	$ 443,424	$ 443,424
Charge-offs	(42,291)	(36,256)	(92,859)	(61,591)	(183,074)
Recoveries	7,806	9,860	14,018	16,645
Provision for (reversal of) loan losses	26,925	40,624	84,557	72,760
Ending balance	485,101	471,238	485,101	471,238	479,385
Commercial & Industrial
Allowance for loan losses:
Beginning balance	213,482	158,688	218,970	161,550	161,550
Charge-offs	(34,379)	(22,841)	(72,322)	(30,714)
Recoveries	4,589	6,402	7,877	9,878
Provision for (reversal of) loan losses	37,038	17,738	66,205	19,273
Ending balance	220,730	159,987	220,730	159,987	218,970
Commercial Real Estate
Allowance for loan losses:
Beginning balance	152,627	160,392	133,758	143,575	143,575
Charge-offs	(263)	(5)	(3,974)	(101)
Recoveries	462	378	1,229	662
Provision for (reversal of) loan losses	(11,146)	8,961	10,667	25,590
Ending balance	141,680	169,726	141,680	169,726	133,758
Total consumer
Allowance for loan losses:
Beginning balance	126,552	137,930	126,657	138,299	138,299
Charge-offs	(7,649)	(13,410)	(16,563)	(30,776)
Recoveries	2,755	3,080	4,912	6,105
Provision for (reversal of) loan losses	1,033	13,925	7,685	27,897
Ending balance	$ 122,691	$ 141,525	$ 122,691	$ 141,525	$ 126,657

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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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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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.

+ References

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