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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
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

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- Details

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