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Stock-Based Compensation (Narrative) (Details) (USD $)
 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Aug. 15, 2011
Stock Award [Member]
Dec. 31, 2011
Stock Award [Member]
Jun. 30, 2011
Non-Employee Directors [Member]
Dec. 31, 2011
Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Incentive stock option plan, exercise period, maximum, in years 10            
Maximum aggregate number of shares of common stock that may be issued under the Plan 1,500,000            
Shares of common stock issued 18,930     18,228   702  
Shares available for grant 1,451,335            
Maximum number of shares granted or awarded in any calendar year per participant 200,000            
Fair value based on closing price of common stock           $ 120,000  
First day stock may be sold or transferred         Aug. 15, 2012    
Recognized expense related to the issuance of shares         2,900,000   120,000
Outstanding options to purchase shares of common stock 0 16,000          
Outstanding options to purchase shares of common stock, exercise price $ 0.00 $ 4.35          
Total intrinsic value of options exercised 2,805,000 2,000,000 500,000        
Recognized tax benefit 1,000,000 700,000 0        
Unrecognized compensation cost $ 0 $ 0 $ 0