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Related Party Transactions (Split Dollar Agreements) (Narrative) (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Chairman, Board of Directors [Member]      
Related Party Transaction [Line Items]      
Payments for life insurance policies   $ 0  
Chief Executive Officer [Member]      
Related Party Transaction [Line Items]      
Payments for life insurance policies $ 0    
Executive Officers [Member]      
Related Party Transaction [Line Items]      
Life insurance assets, carrying amount $ 22,200,000   $ 22,200,000