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Investment Securities Available For Sale, at Fair Value - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract] |  |
Interest receivable | $ 2.4 | $ 5.9
Contractual maturities | 39 years |
Available for sale securities portfolio, weighted average life | 5 years 7 months 6 days | 5 years

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- Definition Represents the weighted average life of the available for sale securities portfolio. + References No definition available. + Details
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- Definition Contractual maturities of investments. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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