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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Loan Purchases and Sales (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | $ 636,115 | $ 24,632 | $ 648,665 | $ 230,962
Sales | $ 523,436 | $ 20,438 | $ 523,436 | $ 34,719
Purchase price as a percentage of loans outstanding | 85.10% | 98.90% | 85.50% | 98.20%
Net gain on sale of loans | $ 400 | $ 1,500 | $ 400 | $ 3,600
Loss on sale of capital call lines of credit | 5,037 | 0 | 5,037 | 0
Specialty lending |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 631,252 | 0 | 631,252 | 0
Sales | 287,185 | 0 | 287,185 | 0
Loss on sale of capital call lines of credit |  |  | 5,000 |
Capital calls lines of credit |  |  | 670,000 |
Specialty lending | Loans Held-for-Investment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Capital calls lines of credit |  |  | 280,700 |
Specialty lending | Unfunded Loan Commitment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Capital calls lines of credit |  |  | 389,300 |
Other commercial and industrial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 4,863 | 0 | 10,308 | 0
Sales | 47,358 | 14,040 | 47,358 | 22,880
Commercial real estate owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 0 | 0 | 2,867 | 0
Sales | 18,851 | 3,519 | 18,851 | 8,960
Residential real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 0 | 8,081 | 4,238 | 154,955
Personal installment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 0 | 16,551 | 0 | 76,007
Multifamily |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Sales | 0 | 2,879 | 0 | 2,879
Commercial real estate non-owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Sales | 16,000 | 0 | 16,000 | 0
Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Sales | $ 154,042 | $ 0 | $ 154,042 | $ 0

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