Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating loss carryforwards	$ 37,114,445	$ 28,795,562
Research and development credits	2,132,050	1,435,314
Deferred revenue	177,683	17,396
Inventory reserve	99,583	104,182
Fixed assets and intangibles	193,833	50,128
Change in fair value of warrant liability		111,993
Accrued liability	351,505
Capitalized research and development		27,583
Other	233,438	115,792
Total deferred tax assets	43,478,986	33,940,706
Valuation allowance	(43,478,986)	(33,940,706)
NuvoGen
Deferred tax assets:
Accrued liability	$ 3,176,449	$ 3,282,756