Commitments and Contingencies (Details)	1 Months Ended	12 Months Ended
	Oct. 31, 2016 patient	Dec. 31, 2017 USD ($) patient	Dec. 31, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of patients enrolled | patient	19
Number of patients still active in study | patient		92
Operating Leases, Future Minimum Payments Due [Abstract]
2018		$ 910,000
2019		901,200
2020		827,000
2021		474,400
2022 and thereafter		128,600
Total minimum lease payments		3,241,200
Operating leases expenses		$ 1,400,000	$ 1,400,000