Accrued Expense (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Accrued Expense
Accrued expense	$ 721	$ 673
Accrued clinical trial expenses	300
Accrued Vacation And Bonus	300	400
Other Accrued Liabilities	$ 100	100
Accrued Clinical And Preclinical Expenses		$ 200