Fair Value Measurements (Details) - Recurring - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Assets
Money market funds (cash equivalents)	$ 7,429,658	$ 12,243,104
Total assets	7,429,658	17,349,731
Liabilities
Interest make-whole derivative	42,000	55,000
Shape contingent consideration	23,242,000	21,080,000
Common stock warrant liability	4,716	64,877
Total liabilities	23,288,716	21,199,877
Short-term investments
Assets
Investments		5,106,627
Level 1
Assets
Money market funds (cash equivalents)	7,429,658	12,243,104
Total assets	7,429,658	12,243,104
Level 2
Assets
Total assets		5,106,627
Level 2 | Short-term investments
Assets
Investments		5,106,627
Level 3
Liabilities
Interest make-whole derivative	42,000	55,000
Shape contingent consideration	23,242,000	21,080,000
Common stock warrant liability	4,716	64,877
Total liabilities	$ 23,288,716	$ 21,199,877