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Stock-Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Stock- Based Compensation (Textual) [Abstract]    
Stock options vesting period years 3 years  
Number of shares authorized under Omnibus Incentive Plan 1,000,000  
Stock-based compensation expense $ 296 $ 399
Income tax benefit from stock-based compensation expense 104 140
Fair market value of fully vested shares as of the grant date $ 25  
Shares of common stock issued to non-management directors 11,656  
Non Qualified Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock options life, years 10 years  
Stock options granted to selected employees 173,750