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Summary of Significant Accounting Policies (Allowance for Loan Losses and Net Investment in Leases) (Details) $ in Millions | Dec. 31, 2021 USD ($) loan | Dec. 31, 2020 USD ($)
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Accounting Policies [Abstract] |  |
Accrued interest | $ | $ 1.6 | $ 5.0
Number of impaired loans used as collateral | loan | 1 |

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- References No definition available. + Details
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