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Servicing Assets - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items] |  |  |  |  |
Serviced loans sold to unaffiliated parties | $ 412,300,000 |  | $ 412,300,000 |  | $ 422,300,000
Servicing fee income | 1,200,000 | $ 1,100,000 | 2,300,000 | $ 2,200,000 |
Operating Income |  |  |  |  |
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items] |  |  |  |  |
Amortization expense | $ 433,000 | $ 573,000 | $ 969,000 | $ 1,300,000 |

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- Definition Serviced loans sold to unaffiliated parties. + References No definition available. + Details
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- Definition All amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122596-111746 + Details
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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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