Fair Value Measurements (Level 3) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Changes in the fair value of Level 3 liabilities
Balance at the beginning of the period	$ 21,199,877	$ 34,147,713
Change in Fair Value	2,088,839	486,777
Balance at the end of the period	23,288,716	34,468,533
Interest make-whole derivative
Changes in the fair value of Level 3 liabilities
Balance at the beginning of the period	55,000	2,400,000
Conversions		(165,957)
Change in Fair Value	(13,000)	(1,484,043)
Balance at the end of the period	42,000	750,000
Shape contingent consideration
Changes in the fair value of Level 3 liabilities
Balance at the beginning of the period	21,080,000	31,491,686
Change in Fair Value	2,162,000	2,129,000
Balance at the end of the period	23,242,000	33,620,686
Common stock warrant liability
Changes in the fair value of Level 3 liabilities
Balance at the beginning of the period	64,877	256,027
Change in Fair Value	(60,161)	(158,180)
Balance at the end of the period	$ 4,716	$ 97,847