Lease Obligations (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) ft²	Dec. 31, 2016 USD ($) ft²	Dec. 31, 2015 ft²	Sep. 30, 2013 USD ($) ft²
Property Subject to or Available for Operating Lease [Line Items]
Rent expense	$ 588,197	$ 1,187,989
Sublease income	$ 812,660	91,579
Lease renewal term	3 years
Accrued costs of rent liability	$ 441,417	$ 965,412
Unimproved [Member]
Property Subject to or Available for Operating Lease [Line Items]
Square feet of leased space | ft²				13,000
Accrued lease termination costs remaining	$ 95,455
Accrued costs of rent liability				$ 515,138
Office [Member]
Property Subject to or Available for Operating Lease [Line Items]
Square feet of leased space | ft²			3,152
Office Sublease [Member]
Property Subject to or Available for Operating Lease [Line Items]
Square feet of leased space | ft²		11,000
Office Sublease, January 2017 [Member]
Property Subject to or Available for Operating Lease [Line Items]
Square feet of leased space | ft²	16,000
Accrued lease termination costs remaining	$ 26,202
Sublease expiration date	Dec. 31, 2018