Fair Value Measurements (Details) - Recurring - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Assets
Money market funds (cash equivalents)	$ 5,431,977	$ 12,243,104
Total assets	5,431,977	17,349,731
Liabilities
Interest make-whole derivative	22,000	55,000
Shape contingent consideration	24,406,000	21,080,000
Common stock warrant liability	1,235	64,877
Total liabilities	24,429,235	21,199,877
Short-term investments
Assets
Investments		5,106,627
Level 1
Assets
Money market funds (cash equivalents)	5,431,977	12,243,104
Total assets	5,431,977	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	22,000	55,000
Shape contingent consideration	24,406,000	21,080,000
Common stock warrant liability	1,235	64,877
Total liabilities	$ 24,429,235	$ 21,199,877