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COVID-19 - Additional Information (Details) $ in Thousands | 3 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) Loan Credit | May 15, 2020 USD ($) Loan | Mar. 15, 2020 | Mar. 03, 2020 | Dec. 31, 2019 USD ($) Loan | Mar. 31, 2019 USD ($)
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Number of loans outstanding | Loan | 1,573 |  |  |  | 1,657 |
Total loans | $ 750,202 |  |  |  | $ 781,341 | $ 657,680
Loans | $ 740,916 |  |  |  | $ 772,782 |
Subsequent Event [Member] | COVID-19 [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Number of loans outstanding | Loan |  | 540 |  |  |  |
Total loans |  | $ 142,900 |  |  |  |
Total Related Credits [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Basis point reduction in target federal funds rate |  |  | 1.00% | 0.50% |  |
Number of related credit relationships | Credit | 25 |  |  |  |  |
Number of individual loans | Loan | 179 |  |  |  |  |
Loans | $ 192,000 |  |  |  |  |
Total Related Credits [Member] | COVID-19 [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Percentage of federal funds rate yield on assets as result of decline in feral reserve board target | 0.00% |  |  |  |  |
Total Related Credits [Member] | Individual Loans [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Total loans | $ 5,000 |  |  |  |  |
Total Related Credits [Member] | Real Estate [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Loans | 182,400 |  |  |  |  |
Total Related Credits [Member] | Unsecured Loans [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Loans | $ 9,600 |  |  |  |  |
Total Related Credits [Member] | Minimum [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Percentage of decrease in federal funds rate target | 0.00% |  |  |  |  |
Total loans | $ 5,000 |  |  |  |  |
Total Related Credits [Member] | Maximum [Member] |  |  |  |  |  |
Unusual Or Infrequent Item [Line Items] |  |  |  |  |  |
Percentage of decrease in federal funds rate target | 0.25% |  |  |  |  |
Total loans | $ 12,800 |  |  |  |  |

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