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Loans Held for Sale - Delinquent and Non-performing Loans Sold During the Period Indicated (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) loan | Dec. 31, 2018 USD ($) loan
Nonperforming Financial Instruments [Member] |  |  |
Loans sold | loan | 2 | 11 | 12
Proceeds | $ 580 | $ 13,048 | $ 8,739
Net (charge-offs) recoveries | 0 | (1) | 68
Net gain (loss) | $ 42 | $ 756 | $ (225)
Nonperforming Financial Instruments [Member] | Multi-family Residential Portfolio Segment [Member] |  |  |
Loans sold | loan | 1 | 5 | 4
Proceeds | $ 284 | $ 2,115 | $ 1,559
Net (charge-offs) recoveries | 0 | 0 | 0
Net gain (loss) | $ 42 | $ 367 | $ 0
Nonperforming Financial Instruments [Member] | Commercial Real Estate |  |  |
Loans sold | loan |  | 2 | 4
Proceeds |  | $ 6,800 | $ 6,065
Net (charge-offs) recoveries |  | 0 | 0
Net gain (loss) |  | $ 383 | $ (235)
Nonperforming Financial Instruments [Member] | Commercial Business and Other Portfolio Segment [Member] |  |  |
Loans sold | loan |  | 1 |
Proceeds |  | $ 3,248 |
Net (charge-offs) recoveries |  | 0 |
Net gain (loss) |  | $ 0 |
Nonperforming Financial Instruments [Member] | One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] |  |  |
Loans sold | loan | 1 | 3 | 2
Proceeds | $ 296 | $ 885 | $ 725
Net (charge-offs) recoveries | 0 | (1) | (4)
Net gain (loss) | $ 0 | $ 6 | $ 0
Nonperforming Financial Instruments [Member] | One-To-Four Family - Residential Portfolio Segment [Member] |  |  |
Loans sold | loan |  |  | 2
Proceeds |  |  | $ 390
Net (charge-offs) recoveries |  |  | 72
Net gain (loss) |  |  | $ 10
Performing Financial Instruments [Member] |  |  |
Loans sold | loan | 2 | 3 | 9
Proceeds | $ 6,913 | $ 2,069 | $ 5,671
Net (charge-offs) recoveries | 0 | 0 | 0
Net gain (loss) | $ 6 | $ 114 | $ 393
Performing Financial Instruments [Member] | Commercial Business and Other Portfolio Segment [Member] |  |  |
Loans sold | loan | 1 |  |
Proceeds | $ 6,139 |  |
Net (charge-offs) recoveries | 0 |  |
Net gain (loss) | $ (62) |  |
Performing Financial Instruments [Member] | Small Business Administration Portfolio Segment [Member] |  |  |
Loans sold | loan | 1 | 3 | 9
Proceeds | $ 774 | $ 2,069 | $ 5,671
Net (charge-offs) recoveries | 0 | 0 | 0
Net gain (loss) | $ 68 | $ 114 | $ 393

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- Definition Amount of net recoveries (charge-offs) during the period on delinquent and non-performing loans during the period. + References No definition available. + Details
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