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Stock-Based Compensation (Options and Common Stock) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Deferred Compensation, Share-based Payments [Member]
Dec. 31, 2012
Employee Stock Option [Member]
Dec. 31, 2010
Employee Stock Option [Member]
Dec. 31, 2011
Employee Stock Option [Member]
Stock-Based Compensation [Abstract]          
Maximum number of shares of common stock that may be delivered 6,000,000        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Outstanding standard employee and director options     50,000   450,000
Options vested and exercisable     50,000   450,000
Number of options exercised     400,000 450,000  
Option exercise price     $ 2.24 $ 1.93  
Intrinsic value of the options exercised     $ 396,800 $ 663,000  
Shares issued     122,848 195,020  
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]          
Number of shares granted   300,000      
Value of shares granted   980,000      
Related stock-based compensation   $ 980,000