SUBSEQUENT EVENTS (Details) - Licensing Agreements $ in Thousands	Apr. 26, 2017 USD ($)	Apr. 21, 2017 USD ($) installment	Jan. 31, 2019 USD ($)	Jan. 31, 2018 USD ($)
EU Licensee | Forecast
Subsequent Event [Line Items]
Receivable related to license agreement			$ 1,300	$ 1,300
Subsequent Event | EU Licensee
Subsequent Event [Line Items]
Sale of patent in license agreement		$ 4,900
Receivable related to license agreement		$ 2,300
Payment period		10 days
Cash received from license agreement	$ 2,300
Subsequent Event | Avira, Inc.
Subsequent Event [Line Items]
Sale of patent in license agreement		$ 3,900
Number of quarterly installments | installment		12
Installment amount payable		$ 325
Payable period		3 years