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Loans and Allowance for Credit Losses on Loans - Major Classifications - Loan Concentrations (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Real estate | Loan receivables | Customer Concentration Risk |  |
Loans |  |
Loans receivable as a percentage of total portfolio | 71.60% | 72.50%

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- Definition Represents the percentage of total portfolio that is represented by a particular financial receivable category. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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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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- Details
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Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |