Loans and Allowance for Credit Losses for Loans - Summary of Provision for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Receivables [Abstract]
Provision for loan losses	$ 8,159	$ 38,310	$ 18,138	$ 41,568
(Credit) provision for unfunded credit commitments	(1,827)	5,402	(2,356)	5,644
Total provision for credit losses for loans	$ 6,332	$ 43,712	$ 15,782	$ 47,212

Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration