ENTITY-WIDE DISCLOSURES: (Schedule of Net Revenues by Payment Type) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue, Major Customer [Line Items]
Total revenues		$ 964	$ 308	$ 1,870
Revenue [Member] | Development Service Payments [Member]
Revenue, Major Customer [Line Items]
Total revenues				62
Revenue [Member] | Royalties [Member]
Revenue, Major Customer [Line Items]
Total revenues		$ 964	$ 308	$ 1,808