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Stock-Based Compensation Plans (Schedule of Share-Based Compensation Expense) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation $ 670,934 $ 632,818 $ 755,511
Employee
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation 614,818 555,898 627,353
Nonemployee
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation $ 56,116 $ 76,920 $ 128,158