Accrued Liabilities (Narrative) (Details)	3 Months Ended	6 Months Ended
	Sep. 30, 2013 USD ($) ft²	Jun. 30, 2016 USD ($) ft²	Dec. 31, 2015 ft²
Office [Member]
Real Estate [Line Items]
Square feet of leased space		52,000	3,152
Sublease expiration date		Dec. 31, 2018
Demonstration And Assembly [Member]
Real Estate [Line Items]
Square feet of leased space		12,000
Unimproved [Member]
Real Estate [Line Items]
Square feet of leased space	13,000
Accrued lease termination costs | $	$ 515,138
Accrued lease termination costs remaining | $		$ 233,197