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Investment In Securities - Gross Unrealized Losses and Estimated Fair Value of Available for Sale Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Fair Value    
Less than 12 Months $ 2,924 $ 8,811
Greater than or equal to 12 Months 5,185 0
Fair Value 8,109 8,811
Unrealized Losses    
Less than 12 Months (17) (44)
Greater than or equal to 12 Months (28) 0
Unrealized Losses $ (45) $ (44)