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Loans - Major Classifications - Loan Concentrations (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Sep. 30, 2019 | Apr. 20, 2018
Loans |  |  |
Loans |  |  | $ 227,594
Real Estate Portfolio Segment [Member] | Loan receivables | Customer Concentration Risk [Member] |  |  |
Loans |  |  |
Credit risk as a percentage of benchmark | 77.90% |  |
Loans receivable as a percentage of total portfolio |  | 75.40% |

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