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Stock Options (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Apr. 30, 2000
Stock Option Plan [Member]
Jun. 30, 2012
Stock Incentive Plan [Member]
May 31, 2008
Stock Incentive Plan [Member]
Jun. 30, 2005
Stock Incentive Plan [Member]
Jun. 30, 2012
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized under stock plan     115,500   300,000 157,500  
Shares available for future issuance under stock plan       56,760      
Percentage of Share Vesting Per Year             20.00%
Share based compensation vesting period             5 years
Stock Options (Textual) [Abstract]              
Stock options compensation expense $ 16,000 $ 30,000          
Restricted stock compensation expense 78,000 40,000          
Total unrecognized compensation expense related to non-vested shares of restricted stock granted $ 496,000            
Weighted average period over which unrecognized compensation is expected to be recognized 3 years 7 months 6 days