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Loans and Leases - Loans and Leases Held for Investment (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022
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Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |  |
Loans and leases held for investment |  | $ 23,472,918 |  | $ 25,796,714 |  |  |
Deferred fees, net |  | (26,388) |  | (45,043) |  |  |
Loans held for investment, net |  | 23,228,909 |  | 25,489,687 |  |  |
Allowance for loan and lease losses |  | (247,762) | $ (291,503) | (281,687) | $ (219,234) | $ (210,055) | $ (200,732)
Loans and leases, net | [1] | 22,981,147 |  | 25,208,000 |  |  |
Land and Acquisitions and Development Loans |  | 213,600 |  | 228,900 |  |  |
Deferred Discounts, Finance Charges and Interest Included in Receivables | [2] | (217,621) |  | (261,984) |  |  |
Financing Receivable, Unamortized Purchase Premium (Discount) |  | (284,300) |  | (334,200) |  |  |
Financing Receivable, Unamortized Purchase Premium |  | 66,700 |  | 72,200 |  |  |
Real Estate Mortgage |  |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |  |
Loans and leases held for investment |  | 13,787,815 |  | 16,378,537 |  |  |
Allowance for loan and lease losses |  | (155,260) | (198,274) | (186,827) | (132,808) | (109,483) | (87,309)
Real Estate Construction and Land |  |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |  |
Loans and leases held for investment | [3] | 3,376,301 |  | 3,183,357 |  |  |
Allowance for loan and lease losses |  | (25,281) | (30,011) | (33,830) | (39,679) | (55,034) | (52,320)
Commercial |  |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |  |
Loans and leases held for investment |  | 5,882,603 |  | 5,780,346 |  |  |
Allowance for loan and lease losses |  | (51,194) | (47,054) | (45,156) | (37,221) | (37,195) | (52,849)
Consumer |  |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |  |
Loans and leases held for investment |  | 426,199 |  | 454,474 |  |  |
Allowance for loan and lease losses |  | (16,027) | $ (16,164) | (15,874) | $ (9,526) | $ (8,343) | $ (8,254)
Loans and Finance Receivables [Member] |  |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |  |
Interest Receivable |  | $ 109,200 |  | $ 111,300 |  |  |
[1] | Excludes accrued interest receivable of $109.2 million and $111.3 million at June 30, 2024 and December 31, 2023, respectively, which is recorded in "Other assets" on the condensed consolidated balance sheets.
[2] | Represents net acquisition discounts of $284.3 million and purchase premiums of $66.7 million at June 30, 2024, and net acquisition discounts of $334.2 million and purchase premiums of $72.2 million at December 31, 2023
[3] | Includes land and acquisition and development loans of $213.6 million and $228.9 million at June 30, 2024 and December 31, 2023

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- Definition Unearned discounts (other than cash or quantity discounts and the like), finance charges, and interest included in the face amount of receivables, that are shown as a deduction from the related receivables. For example, 1) finance charges booked as a receivable when a loan is made and recognized as income at a later date; and 2) interest charges deducted from the face loan amount, resulting in a discounted amount actually advanced to the borrower (wherein the receivable includes the amount actually advanced to the borrower and the as yet unearned interest income). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481990/310-10-45-8 + Details
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