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Stock-Based Compensation - Additional Disclosures (Details) - USD ($)
3 Months Ended 6 Months Ended
Aug. 18, 2010
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense   $ 980,865 $ 569,242 $ 1,482,727 $ 1,247,618
Number of shares that may be issued under plan   1,644,875   1,644,875  
Award expiration period       10 years  
Unearned stock-based compensation expense not yet recognized, recognition period       1 year 6 months 1 day  
Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period       1 year  
Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period       3 years  
Equity Based Incentive Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award value on date of grant $ 1,900,000        
Award vesting period 4 years        
Stock-based compensation expense   $ 0 $ 0 $ 0 $ 316,667
Stock Options and Restricted Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unearned stock-based compensation expense not yet recognized   $ 5,700,000   $ 5,700,000