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Loans and Allowance for Loan Losses - Troubled Debt Restructurings That Are Performing (Details) $ in Thousands | 3 Months Ended | 12 Months Ended | 15 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 USD ($) contract | Dec. 31, 2020 USD ($) contract | Mar. 31, 2021 USD ($) contract
Number of contracts |  |  | 0
Performing Financial Instruments [Member] |  |  |
Number of contracts | 23 | 25 |
Amortized Cost | $ | $ 15,278 | $ 15,911 | $ 15,278
Multi-Family Residential [Member] | Performing Financial Instruments [Member] |  |  |
Number of contracts | 6 | 6 |
Amortized Cost | $ | $ 1,686 | $ 1,700 | 1,686
Commercial Real Estate | Performing Financial Instruments [Member] |  |  |
Number of contracts | 1 | 1 |
Amortized Cost | $ | $ 7,584 | $ 7,702 | 7,584
One-To-Four Family - Mixed Used Property [Member] | Performing Financial Instruments [Member] |  |  |
Number of contracts | 5 | 5 |
Amortized Cost | $ | $ 1,720 | $ 1,731 | 1,720
One-To-Four Family - Residential [Member] | Performing Financial Instruments [Member] |  |  |
Number of contracts | 3 | 3 |
Amortized Cost | $ | $ 501 | $ 507 | 501
Taxi Medallion Portfolio Segment [Member] | Performing Financial Instruments [Member] |  |  |
Number of contracts |  | 2 |
Amortized Cost | $ |  | $ 440 |
Commercial Business and Other [Member] | Performing Financial Instruments [Member] |  |  |
Number of contracts | 8 | 8 |
Amortized Cost | $ | $ 3,787 | $ 3,831 | $ 3,787

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- Definition The amount of amortized cost of financing receivables modified as troubled debt restructuring. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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