Loans and Leases Composition of Loans and Leases Held for Investment (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross		$ 25,155,487	$ 23,983,918
Loans held for investment, net		25,032,679	23,781,663
Loans and leases held for investment, net	[1]	24,787,067	23,542,303
Interest Receivable		11,400	12,600
Land and Acquisitions and Development Loans		214,500	223,900
Financing Receivable, Unamortized Purchase Premium (Discount)		86,061	175,713
Financing Receivable, Unamortized Loan Cost (Fee)		(36,747)	(26,542)
Financing Receivable, Unamortized Purchase Premium		72,400	59,500
Financing Receivable, Unamortized Purchase Premium (Discount)		(158,500)	(235,200)
Loans and Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Interest Receivable		104,300	96,800
Mortgages [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross		13,846,097	13,605,595
Real Estate Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross	[2]	1,959,591	3,187,146
Commercial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross		8,994,466	6,788,923
Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Gross		$ 355,333	$ 402,254

[1] Excludes accrued interest receivable of $104.3 million and $96.8 million at December 31, 2025 and 2024, which is recorded in "Other assets" on the consolidated balance sheets.

[2] Includes land and acquisition and development loans of $214.5 million and $223.9 million at December 31, 2025 and 2024. (2)    Represents net acquisition discounts of $158.5 million and net purchase premiums of $72.4 million at December 31, 2025, and net acquisition discounts of $235.2 million and purchase premiums of $59.5 million at December 31, 2024.