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Summary of Significant Accounting Policies (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) store borrower loan | Sep. 30, 2020 USD ($) fiscalQuarter store loan borrower | Jun. 30, 2020 USD ($) loan | Mar. 31, 2020 USD ($) | Jan. 01, 2020 USD ($) | Dec. 31, 2019 USD ($)
Number of temporary loan modifications | loan | 321 | 321 | 708 |  |  |
Historical rate application, period |  | 12 months |  |  |  |
Number of quarters representing reasonable and supportable forecast period | fiscalQuarter |  | 8 |  |  |  |
Allowance for credit losses | $ 156 | $ 156 |  |  |  |
Reserve for unfunded commitments | 5,092 | 5,092 |  |  |  | $ 0
Outstanding exposure | $ 851,000 | $ 851,000 | $ 1,600,000 |  |  |
Outstanding exposure percentage | 10.80% | 10.80% | 20.00% |  |  |
Allowance for credit losses | $ 156 | $ 156 |  |  |  | $ 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | loan |  | 0 |  |  |  |
PPP loans |  |  |  |  |  |
Term of the loans granted |  | 2 years |  |  |  |
Interest rate (as a percent) |  | 1.00% |  |  |  |
Principal outstanding amount | $ 456,100 | $ 456,100 |  |  |  |
Number of borrowers | borrower | 1,400 | 1,400 |  |  |  |
Banking Services |  |  |  |  |  |
Number of locations | store | 20 | 20 |  |  |  |
Lending Services |  |  |  |  |  |
Number of locations | store | 5 | 5 |  |  |  |
Lending Services | Residential Mortgage |  |  |  |  |  |
Noninterest income | $ 1,600 |  |  |  |  |
ASU 2016-13 |  |  |  |  |  |
Reserve for unfunded commitments |  |  |  | $ 4,100 |  |
ASU 2016-13 | Impact of ASC 326 Adoption |  |  |  |  |  |
Allowance for credit losses |  |  |  |  | $ 10,600 |
Reserve for unfunded commitments |  |  |  |  | $ 4,100 |

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