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Employee Benefit Plans (Stock Option Plans) (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2017
Mar. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options vested during period, shares 0 3,300  
Options vested during period, shares, weighted average exercise price   $ 23.33  
Options outstanding and exercisable, instrinsic value $ 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