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Loans and Allowance for Credit Losses - Summary of Allocation of Allowance for Loan Loss as well as Activity in Allowance for Loan Loss Attributed to Various Segments in Loan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance	$ 147,914	$ 110,762	$ 116,958	$ 74,029
Provision for credit losses or (recapture)	71,585	27,157	212,993	123,299
Loans receivable allowance including provision losses or (recapture)	219,499	137,919	329,951	201,180
Loans charged-off	(53,305)	(37,879)	(167,506)	(104,345)
Recoveries of loans previously charged-off	4,069	1,045	7,818	4,250
Net charge-offs	(49,236)	(36,834)	(159,688)	(100,095)
Ending ALLL Balance	170,263	101,085	170,263	101,085
Gross loans receivable	3,426,043		3,426,043		$ 3,033,392
Accounting Standards Update 2016-13
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance				3,852
Commercial and industrial loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance	12,103	9,551	8,877	4,831
Provision for credit losses or (recapture)	1,804	2,771	13,183	7,247
Loans receivable allowance including provision losses or (recapture)	13,907	12,322	22,060	13,506
Loans charged-off	(3,852)	(2,328)	(12,419)	(3,515)
Recoveries of loans previously charged-off	390	1	804	4
Net charge-offs	(3,462)	(2,327)	(11,615)	(3,511)
Ending ALLL Balance	10,445	9,995	10,445	9,995
Commercial and industrial loans | Accounting Standards Update 2016-13
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance				1,428
Construction, land and land development loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance	6,110	6,539	6,386	7,425
Provision for credit losses or (recapture)	(2,558)	132	(2,834)	835
Loans receivable allowance including provision losses or (recapture)	3,552	6,671	3,552	6,671
Loans charged-off	0	0	0	0
Recoveries of loans previously charged-off	0	0	0	0
Net charge-offs	0	0	0	0
Ending ALLL Balance	3,552	6,671	3,552	6,671
Gross loans receivable
Construction, land and land development loans | Accounting Standards Update 2016-13
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance				(1,589)
Real Estate Portfolio Segment | Residential real estate loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance	15,532	8,849	13,049	4,142
Provision for credit losses or (recapture)	(1,580)	3,517	2,906	8,283
Loans receivable allowance including provision losses or (recapture)	13,952	12,366	15,955	14,048
Loans charged-off	(1,290)	(1,476)	(3,297)	(3,158)
Recoveries of loans previously charged-off	3	2	7	2
Net charge-offs	(1,287)	(1,474)	(3,290)	(3,156)
Ending ALLL Balance	12,665	10,892	12,665	10,892
Real Estate Portfolio Segment | Residential real estate loans | Accounting Standards Update 2016-13
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance				1,623
Real Estate Portfolio Segment | Commercial real estate loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance	7,319	6,952	7,441	5,470
Provision for credit losses or (recapture)	1,994	456	1,872	698
Loans receivable allowance including provision losses or (recapture)	9,313	7,408	9,313	7,408
Loans charged-off	(223)	0	(223)	0
Recoveries of loans previously charged-off	0	0	0	0
Net charge-offs	(223)	0	(223)	0
Ending ALLL Balance	9,090	7,408	9,090	7,408
Real Estate Portfolio Segment | Commercial real estate loans | Accounting Standards Update 2016-13
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance				1,240
Consumer and other loans:
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance	106,850	78,871	81,205	50,996
Provision for credit losses or (recapture)	71,925	20,281	197,866	106,236
Loans receivable allowance including provision losses or (recapture)	178,775	99,152	279,071	159,547
Loans charged-off	(47,940)	(34,075)	(151,567)	(97,672)
Recoveries of loans previously charged-off	3,676	1,042	7,007	4,244
Net charge-offs	(44,264)	(33,033)	(144,560)	(93,428)
Ending ALLL Balance	134,511	66,119	134,511	66,119
Consumer and other loans: | Accounting Standards Update 2016-13
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance				2,315
Unallocated
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance	0	0	0	1,165
Provision for credit losses or (recapture)	0	0	0	0
Loans receivable allowance including provision losses or (recapture)	0	0	0	0
Loans charged-off	0	0	0	0
Recoveries of loans previously charged-off	0	0	0	0
Net charge-offs	0	0	0	0
Ending ALLL Balance	$ 0	$ 0	$ 0	0
Unallocated | Accounting Standards Update 2016-13
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
ALLL beginning balance				$ (1,165)

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