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Stock-Based Compensation (Details Textuals) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense $ 131,000 $ 582,000 $ 278,000 $ 885,000  
Stock Options and Stock Appreciation Rights
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted Stock options (in shares) 25,000 0 50,000 0  
Unrestricted Stock Grants
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrestricted Stock Grants to directors, officers and employees (issued immediately) (in shares)         111,163
Unrestricted Stock Grants to directors, officers and employees (issued in four equal increments) (in shares)         464,280
Unrestricted Stock Grants to directors, officers and employees (in shares)         575,443
Stock-based compensation expense 94,000 100,000 189,000 246,000  
Shares issued to officers and employees (in shares) 74,668 105,000 76,906 115,682  
Grantees surrendered shares of common stock (in shares) 21,288   12,153 13,721  
Net of common stock shares were issued (in shares) 53,380 71,662 64,753 101,961  
Company paid withholding taxes   115,000 36,000 39,000  
Former President And Chief Executive Officer
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense   $ 362,000