Loans and Allowance for Credit Losses - Schedule of Detail Activity in the Allowance for Credit Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 85,940	$ 74,444	$ 74,444
Loans charged-off	(21,569)	(1,054)	(19,523)
Recoveries of loans previously charged-off	139	79
Net loans (charged-off) recovered	(21,430)	(975)
Provision for (reversal of) credit losses	35,174	4,908
Ending Balance	99,684	78,377	85,940
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	17,824	15,655	15,655
Loans charged-off	(496)	(868)	(2,020)
Recoveries of loans previously charged-off	115	76
Net loans (charged-off) recovered	(381)	(792)
Provision for (reversal of) credit losses	6,239	912
Ending Balance	23,682	15,775	17,824
Income-producing - commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	40,050	35,688	35,688
Loans charged-off	(20,943)	0	(11,817)
Recoveries of loans previously charged-off	0	0
Net loans (charged-off) recovered	(20,943)	0
Provision for (reversal of) credit losses	26,830	2,452
Ending Balance	45,937	38,140	40,050
Owner-occupied - commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	14,333	12,702	12,702
Loans charged-off	0	0
Recoveries of loans previously charged-off	24	0
Net loans (charged-off) recovered	24	0
Provision for (reversal of) credit losses	(820)	(245)
Ending Balance	13,537	12,457	14,333
Real estate mortgage - residential
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	861	969	969
Loans charged-off	0	0
Recoveries of loans previously charged-off	0	0
Net loans (charged-off) recovered	0	0
Provision for (reversal of) credit losses	32	33
Ending Balance	893	1,002	861
Construction - commercial and residential
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,198	7,195	7,195
Loans charged-off	(129)	(136)	(5,636)
Recoveries of loans previously charged-off	0	0
Net loans (charged-off) recovered	(129)	(136)
Provision for (reversal of) credit losses	2,989	1,682
Ending Balance	13,058	8,741	10,198
Construction - C&I (Owner-Occupied)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,992	1,606	1,606
Loans charged-off	0	0
Recoveries of loans previously charged-off	0	0
Net loans (charged-off) recovered	0	0
Provision for (reversal of) credit losses	(63)	36
Ending Balance	1,929	1,642	1,992
Home equity
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	657	555	555
Loans charged-off	0	0
Recoveries of loans previously charged-off	0	0
Net loans (charged-off) recovered	0	0
Provision for (reversal of) credit losses	(39)	38
Ending Balance	618	593	657
Other consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	25	74	74
Loans charged-off	(1)	(50)	(50)
Recoveries of loans previously charged-off	0	3
Net loans (charged-off) recovered	(1)	(47)
Provision for (reversal of) credit losses	6	0
Ending Balance	$ 30	$ 27	$ 25

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

+ References

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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