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Loans and Allowance for Loan Losses - Troubled Debt Restructurings That Are Performing (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 USD ($) loan | Jun. 30, 2019 loan | Jun. 30, 2020 USD ($) contract loan | Jun. 30, 2019 loan | Dec. 31, 2019 USD ($) contract
Number | loan | 0 | 0 | 0 | 0 |
Performing Financial Instruments [Member] |  |  |  |  |
Number | contract |  |  | 22 |  | 24
Recorded investment | $ | $ 5,983 |  | $ 5,983 |  | $ 6,494
Multi-Family Residential [Member] | Performing Financial Instruments [Member] |  |  |  |  |
Number | contract |  |  | 7 |  | 7
Recorded investment | $ | 1,860 |  | $ 1,860 |  | $ 1,873
One-To-Four Family - Mixed Used Property [Member] | Performing Financial Instruments [Member] |  |  |  |  |
Number | contract |  |  | 3 |  | 4
Recorded investment | $ | 1,143 |  | $ 1,143 |  | $ 1,481
One-To-Four Family - Residential [Member] | Performing Financial Instruments [Member] |  |  |  |  |
Number | contract |  |  | 3 |  | 3
Recorded investment | $ | 518 |  | $ 518 |  | $ 531
Taxi Medallion Portfolio Segment [Member] | Performing Financial Instruments [Member] |  |  |  |  |
Number | contract |  |  | 6 |  | 7
Recorded investment | $ | 1,512 |  | $ 1,512 |  | $ 1,668
Commercial Business and Other [Member] | Performing Financial Instruments [Member] |  |  |  |  |
Number | contract |  |  | 3 |  | 3
Recorded investment | $ | $ 950 |  | $ 950 |  | $ 941

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