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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Summary of Deferred tax assets and liabilities    
Stock-based compensation $ 4,450,129 $ 6,077,629
Accrued incentive compensation 7,355,744 4,724,670
Deferred Tax Liabilities, Unrealized Gains on Trading Securities (1,802,708) (722,466)
Deferred Tax Liabilities, Property and Equipment (779,391) (815,825)
Other assets and liabilities (487,007) (57,929)
Net deferred tax assets $ 8,736,767 $ 9,206,079