Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 6)

v3.8.0.1
Stock-Based Compensation (Details 6) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Share-based Compensation, Total $ 4,568,716 $ 1,860,697 $ 12,472,870 $ 5,405,908
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense 3,843,186 1,204,982 9,865,351 3,577,081
Phantom Share Units (PSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense 399,867 230,276 1,601,160 673,405
Deferred Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense 0 31,337 1,362 92,307
Employee Stock Purchase Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense 79,046 97,830 266,398 220,546
Employee Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Allocated Share-based Compensation Expense $ 246,617 $ 296,272 $ 738,599 $ 842,569