Accrued Expenses (Schedule Of Accrued Expenses) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accrued Expenses [Abstract]
Compensation expense	$ 1,057	$ 938
Accrued clinical	377	156
Professional fees	94	274
Property and equipment	219
Other	307	53
Accrued expenses	$ 2,054	$ 1,421