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Property, Office Facilities, and Equipment, Net (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Property, Plant and Equipment [Abstract]        
Total depreciation expense $ 99,000 $ 98,000 $ 196,000 $ 214,000