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Loans Receivable and Allowance for Credit Losses - Loan Purchases, Sales and Transfers (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Loans Receivable and Allowance for Credit Losses |  |
Loans transferred from held-for-investment to held-for-sale | $ 199,974 | $ 160,476
Sales | 188,167 | 179,532
Purchases | 108,080 | 154,682
Writeoff | 1,000 | 273
Originated |  |
Loans Receivable and Allowance for Credit Losses |  |
Sales | 92,000 | 111,000
Loans sold in secondary market | Purchased |  |
Loans Receivable and Allowance for Credit Losses |  |
Sales | 96,000 | 69,000
Commercial lending | Commercial and industrial (“C&I”) |  |
Loans Receivable and Allowance for Credit Losses |  |
Loans transferred from held-for-investment to held-for-sale | 199,974 | 156,876
Sales | 187,202 | 175,932
Purchases | 33,344 | 22,683
Commercial lending | CRE |  |
Loans Receivable and Allowance for Credit Losses |  |
Loans transferred from held-for-investment to held-for-sale |  | 3,600
Sales |  | 3,600
Purchases |  | 0
Consumer lending | Real estate loan | Single-family residential |  |
Loans Receivable and Allowance for Credit Losses |  |
Loans transferred from held-for-investment to held-for-sale | 0 | 0
Sales | 965 | 0
Purchases | $ 74,736 | $ 131,999

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