Balances and Transaction with Related Parties (Details 1) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Related Party Transactions [Abstract]
R&D expenses (See 2 below)	$ (167)
General and administration expenses (See 3 below)		$ 28

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

No definition available.

Name:	phge_GeneralAndAdministrationExpenses
Namespace Prefix:	phge_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration