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Share-Based Incentive Plan (USD $)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
ShareBasedCompensationAbstract          
Issuance of vested restricted stock     $ 656,000   $ 490,000
Stock compensation $ 122,000 $ 113,000 $ 308,087 $ 250,906