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Real Estate Owned - Summary of Expenses Related to Foreclosed Real Estate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Real Estate [Abstract]      
Net loss (gain) on sales $ 346 $ (377) $ (310)
Operating expenses, net of rental income 240 316 283
Total $ 586 $ (61) $ (27)