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Loans Receivable - Commercial Servicing Assets (Details) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Servicing Asset at Fair Value, Amount | $ 583,000 | $ 361,000 | $ 0
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance | $ 0 | $ 0 | $ 0
Minimum | Measurement Input, Discount Rate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Servicing Asset, Measurement Input | 0.100 | 10.0 |
Minimum | Measurement Input, Prepayment Rate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Servicing Asset, Measurement Input | 0.125 | 11.5 |
Maximum | Measurement Input, Discount Rate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Servicing Asset, Measurement Input |  | 12.8 |
Maximum | Measurement Input, Prepayment Rate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Servicing Asset, Measurement Input | 0.186 | 19.7 |

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- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
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- Definition Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746 + Details
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