SUBSEQUENT EVENTS (Details) - Subsequent Event $ in Millions	Apr. 23, 2020 USD ($)	Apr. 06, 2020 shares
Subsequent Event [Line Items]
Number of common stock shares issued per CSR | shares		1.2082
Effective exchange ratio of Foamix ordinary shares into Menlo common stock		1.8006
Share issued and delivered upon CSR conversion | shares		74,544,413
Ownership of post-merger Menlo held by pre-merger Foamix shareholders, as a percent		82.00%
Ownership of post-merger Menlo held by pre-merger Menlo stockholders, as a percent		18.00%
Foamix | Forecast
Subsequent Event [Line Items]
Upfront cash payment to be received | $	$ 10
Additional cash payment to be received upon receipt of marketing approval in China | $	$ 1