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Stock-Based Compensation (Details 3) (USD $)
6 Months Ended
Jun. 30, 2012
Summary of changes in the Company's nonvested restricted shares  
Nonvested at January 1, 2012 4,800
Granted 0
Vested 2,000
Forfeited 0
Nonvested at June 30, 2012 2,800
Nonvested at January 1, 2012 $ 6.88
Granted $ 0.00
Vested $ 7.25
Forfeited $ 0.00
Nonvested at June 30, 2012 $ 6.61