Schedule II - Valuation and Qualifying Accounts (Details) - Valuation Allowance of Deferred Tax Assets - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 63,324,806	$ 59,792,087	$ 56,712,325
Additions	4,402,479	3,532,719	3,079,762
Deductions	0	0	0
Balance at End of Year	$ 67,727,285	$ 63,324,806	$ 59,792,087