Annual report pursuant to Section 13 and 15(d)

Schedule II - Valuation and Qualifying Accounts (Details)

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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]    
Valuation allowance on deferred tax assets, beginning balance $ (13,773,409) $ (9,521,260)
Additions (deductions) charged to (from) income tax expense (1,551,029) (4,252,149)
Other changes to valuation allowance 0 0
Valuation allowance on deferred tax assets, ending balance $ (15,324,438) $ (13,773,409)