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Employee Benefit Plans (Stock Option Plans) (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options vested during period, shares 0      
Options outstanding and exercisable, instrinsic value $ 0 $ 0 $ 0  
Compensation expense related to stock options 0      
Unrecognized compensation cost related to non-vested stock options $ 0      
2008 Equity Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock reserved for the issuance 50,000      
2008 Equity Incentive Plan [Member] | Stock Options and SARS [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock reserved for the issuance       50,000
2008 Equity Incentive Plan [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock reserved for the issuance       50,000