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Disclosures About Offsetting Assets and Liabilities (Financial Assets and Derivative Assets that are Subject to Offset) (Details) (Parenthetical) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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Offsetting Assets [Line Items] |  |
Fair value of securities pledged as collateral | $ 445,144 | $ 199,110
Fair Value Of Securities Pledged As Collateral [Member] |  |
Offsetting Assets [Line Items] |  |
Fair value of securities pledged as collateral | $ 467,900 | $ 217,300

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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 Fair value of securities received as collateral against securities purchased under agreement to resell. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226013-175313 + Details
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