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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, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | $ 460,456 | $ 18,008 | $ 737,336 | $ 210,263
Sales | $ 74,404 | $ 0 | $ 130,501 | $ 1,822
Purchase price as a percentage of loans outstanding | 102.00% | 98.50% | 103.00% | 100.40%
Net gain on sale of loans | $ 2,200 | $ 300 | $ 4,300 | $ 400
Loans receivable, PPP |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 460,456 | 0 | 621,487 | 0
Multi-family |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Sales | 19,443 | 0 | 19,443 | 0
Commercial and industrial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Sales | 10,059 | 0 | 28,990 | 0
Commercial real estate owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Sales | 4,461 | 0 | 6,698 | 0
Commercial real estate non-owner occupied |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Sales | 0 | 0 | 18,366 | 0
Residential real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 0 | 0 | 0 | 495
Sales | 11,623 | 0 | 28,186 | 0
Installment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Purchases | 0 | 18,008 | 115,849 | 209,768
Sales | $ 28,818 | $ 0 | $ 28,818 | $ 1,822

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- Definition Amount of increase from purchase of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 11 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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