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Stock-Based Compensation - Restricted Stock (Details) - Restricted Stock - USD ($)
6 Months Ended
Apr. 06, 2016
Jan. 06, 2016
Jun. 30, 2016
Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense     $ 908,879 $ 1,492,142
Total unrecognized compensation expense     $ 2,518,209  
Unrecognized compensation cost related to awards, vesting period     2 years  
Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards granted in period   75,915    
Award vesting period   2 years    
Chief Financial Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards granted in period 20,000      
Award vesting period 2 years      
Vice President of Technical Services        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards granted in period 20,000      
Award vesting period 2 years      
Directors        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards granted in period     23,536  
Award vesting period     1 year