Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Income Tax Uncertainties [Abstract]
Income tax related interest and penalties	$ 0.0	$ 0.0
Federal [Member]
Tax Carryforwards [Abstract]
Net operating loss carryforwards			$ 47.5
Federal [Member] | Minimum [Member]
Tax Carryforwards [Abstract]
Expiration date of net operating loss carryforwards			Dec. 31, 2029
Federal [Member] | Maximum [Member]
Tax Carryforwards [Abstract]
Expiration date of net operating loss carryforwards			Dec. 31, 2035
New Jersey [Member]
Tax Carryforwards [Abstract]
Net operating loss carryforwards			$ 23.3
New Jersey [Member] | Minimum [Member]
Tax Carryforwards [Abstract]
Expiration date of net operating loss carryforwards			Dec. 31, 2030
New Jersey [Member] | Maximum [Member]
Tax Carryforwards [Abstract]
Expiration date of net operating loss carryforwards			Dec. 31, 2035
Research and Development Credit [Member] | Federal [Member]
Tax Carryforwards [Abstract]
Tax credit carryforwards			$ 0.8
Research and Development Credit [Member] | New Jersey [Member]
Tax Carryforwards [Abstract]
Tax credit carryforwards			0.3
Orphan Drug Credit [Member] | Federal [Member]
Tax Carryforwards [Abstract]
Tax credit carryforwards			$ 4.0