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Stock-Based Compensation - Restricted Stock (Details) - Restricted Stock - USD ($)
3 Months Ended
Mar. 23, 2017
Feb. 14, 2017
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense     $ 1,408,265 $ 481,753
Total unrecognized compensation expense     $ 3,649,957  
Unrecognized compensation cost related to awards, vesting period     2 years  
Chief Executive Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period   70,464    
Award vesting period   3 years    
Chief Financial Officer        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period 20,000      
Award vesting period 3 years      
Vice President of Technical Services        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period 20,000      
Award vesting period 3 years      
Directors        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period     15,968  
Award vesting period     1 year