Accounts Payable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts Payable [Line Items]
Accounts Payable, Current	$ 486	$ 587
Other Payables [Member]
Accounts Payable [Line Items]
Accounts Payable, Current		100
Preclinical Expenses [Member]
Accounts Payable [Line Items]
Accounts Payable, Current		200
License Maintenance Fee [Member]
Accounts Payable [Line Items]
Accounts Payable, Current		100
Manufacturing Costs [Member]
Accounts Payable [Line Items]
Accounts Payable, Current	300	100
Legal and Patent [Member]
Accounts Payable [Line Items]
Accounts Payable, Current	$ 200
Clinical Research Organizations [Member]
Accounts Payable [Line Items]
Accounts Payable, Current		$ 100