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Portfolio Loans - Schedule of financial instruments owned and pledged as collateral (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Portfolio loans, net | $ 7,692,081 | $ 7,634,094
Asset Pledged as Collateral |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Portfolio loans, net | 5,891,323 | 5,900,166
FHLB |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Portfolio loans, net | 5,065,913 | 5,095,448
Federal Reserve Bank |  |
Financial Instruments Owned and Pledged as Collateral [Line Items] |  |
Portfolio loans, net | $ 825,410 | $ 804,718

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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