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Stockholders' Equity (Details 4)
6 Months Ended
Jun. 30, 2013
Stockholders' Equity  
Common stock shares reserved for issuance under the 2012 Stock Incentive Plan 2,000,000
Stockholders' Equity  
Shares available for granting options or stock awards 700,746
Nonvested restricted stock
 
Stockholders' Equity  
Vesting percentage on each anniversary of the grant date 20.00%
Service period to amortize aggregate market value of the nonvested restricted stock 6 years