Income Taxes - Net Operating Loss Carryforwards (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Taxes
Net operating loss carryforwards	$ 101,300,000
Valuation allowance	5,096,900	$ 4,452,000
Income tax (expense) benefit	$ 0	$ 0