SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Summary of Revenues Within Geographic Areas) (Details) $ in Thousands		6 Months Ended	12 Months Ended
		Dec. 31, 2016 USD ($)	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Jun. 30, 2016 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments | item			1
Total revenues		$ 239,997	$ 937,237	$ 607,045	$ 489,843
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues		160,321	505,469	348,949	334,260
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	[1]	37,500	175,894	128,295	74,830
NETHERLANDS
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues		23,099	123,959	70,067	36,377
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues		$ 19,077	$ 131,915	$ 59,734	$ 44,376

[1] Except for Netherlands