Loans and Leases Allowance for Loan and Leases Held for Investment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	$ 75,505	$ 94,943
Recoveries	16,977	9,116
Net charge-offs	(58,528)	(85,827)
Provision for credit losses	64,780	43,500
Allowance for loan and lease losses	245,612	239,360	$ 281,687
Financing Receivable, Individually Evaluated for Impairment	2,357	5,408
Financing Receivable, Collectively Evaluated for Impairment	243,255	233,952
Financing Receivable, Individually Evaluated for Credit Loss	156,273	186,891
Financing Receivable, Collectively Evaluated for Credit Loss	24,876,406	23,594,772
Loans held for investment, net	25,032,679	23,781,663
Previously Reported
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses		239,360
Mortgages [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	26,507	63,117
Recoveries	2,786	2,766
Net charge-offs	(23,721)	(60,351)
Provision for credit losses	15,368	19,278
Allowance for loan and lease losses	137,401		186,827
Financing Receivable, Individually Evaluated for Impairment	2,357	1,702
Financing Receivable, Collectively Evaluated for Impairment	135,044	144,052
Financing Receivable, Individually Evaluated for Credit Loss	154,402	167,060
Financing Receivable, Collectively Evaluated for Credit Loss	13,596,385	13,260,599
Loans held for investment, net	13,750,787	13,427,659
Mortgages [Member] | Previously Reported
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses		145,754
Real Estate Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	21,536	0
Recoveries	1,370	0
Net charge-offs	(20,166)	0
Provision for credit losses	18,075	(22,890)
Allowance for loan and lease losses	8,849		33,830
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	8,849	10,940
Financing Receivable, Individually Evaluated for Credit Loss	0	0
Financing Receivable, Collectively Evaluated for Credit Loss	1,947,627	3,172,293
Loans held for investment, net	1,947,627	3,172,293
Real Estate Construction [Member] | Previously Reported
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses		10,940
Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	22,977	26,322
Recoveries	12,264	5,711
Net charge-offs	(10,713)	(20,611)
Provision for credit losses	28,967	43,288
Allowance for loan and lease losses	86,087		45,156
Financing Receivable, Individually Evaluated for Impairment	0	3,706
Financing Receivable, Collectively Evaluated for Impairment	86,087	64,127
Financing Receivable, Individually Evaluated for Credit Loss	1,871	19,831
Financing Receivable, Collectively Evaluated for Credit Loss	8,975,335	6,758,998
Loans held for investment, net	8,977,206	6,778,829
Commercial Portfolio Segment [Member] | Previously Reported
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses		67,833
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs	4,485	5,504
Recoveries	557	639
Net charge-offs	(3,928)	(4,865)
Provision for credit losses	2,370	3,824
Allowance for loan and lease losses	13,275		$ 15,874
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Collectively Evaluated for Impairment	13,275	14,833
Financing Receivable, Individually Evaluated for Credit Loss	0	0
Financing Receivable, Collectively Evaluated for Credit Loss	357,059	402,882
Loans held for investment, net	$ 357,059	402,882
Consumer Portfolio Segment [Member] | Previously Reported
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses		$ 14,833