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Stock-Based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2013
Mar. 31, 2017
Mar. 31, 2014
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value       $ 6,829,866      
Share-based compensation (Textual) [Abstract]              
Granted Stock option       0      
Stock compensation expense       $ 5,602,000 $ 4,540,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number       2,540,704   2,569,550  
Weighted average exercise price of stock option       $ 0.00      
Remaining weighted average contractual term       5 years 4 months 3 days      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value       $ 6,471,607      
Restricted Stock Awards [Member]              
Share-based compensation (Textual) [Abstract]              
Total fair value of restricted stock vested       2,000 138,000    
Stock compensation expense       $ 5,602,000 $ 4,540,000    
Number of shares, Granted       0      
Weighted Average Grant Date Fair Value, Granted       $ 0.00      
Market Share Unit [Member]              
Share-based compensation (Textual) [Abstract]              
Shares received as percent of target number of units granted   200.00%          
Unrecognized compensation cost       $ 1,769,136      
Weighted average-period, cost is expected to be recognized       1 year 10 months 9 days      
Number of shares, Granted       166,434      
Weighted Average Grant Date Fair Value, Granted       $ 13.82 $ 4.94    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate       1.50% 0.90%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate       54.00% 49.00%    
Employee Stock Purchase Plan [Abstract]              
Expected dividend yield (%)       0.00% 0.00%    
Restricted Stock Units [Member]              
Share-based compensation (Textual) [Abstract]              
Total fair value of restricted stock vested       $ 3,234,758 $ 3,712,000    
Unrecognized compensation cost       $ 14,592,794      
Weighted average-period, cost is expected to be recognized       2 years 11 months 18 days      
Number of shares, Granted       1,111,130      
Weighted Average Grant Date Fair Value, Granted       $ 10.85      
Performance Shares [Member]              
Share-based compensation (Textual) [Abstract]              
Stock compensation expense     $ 43,200        
Unrecognized compensation cost       $ 133,000      
Weighted Average Grant Date Fair Value, Granted     $ 12.30        
Options [Member]              
Employee Stock Purchase Plan [Abstract]              
Maximum offering period   27 months          
2010 Plan [Member] | Minimum [Member]              
Share-based compensation (Textual) [Abstract]              
Options vested       1 year      
2010 Plan [Member] | Maximum [Member]              
Share-based compensation (Textual) [Abstract]              
Options vested       4 years      
2010 Plan [Member] | Options [Member]              
Share-based compensation (Textual) [Abstract]              
Expiration period       10 years      
2013 Employee Stock Purchase Plan [Member] | Options [Member]              
Employee Stock Purchase Plan [Abstract]              
Common stock reserved for future issuance       207,183     650,000
Purchase price as a percent of the fair market value of the common stock 85.00%            
Maximum offering period 6 months            
Maximum employee investment in ESPP as a percentage of gross compensation 10.00%            
Maximum shares of common stock that can be puchased by each employee 1,500