INCOME TAXES (Schedule of Taxes on Income) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2016
Current taxes:
U.S. Federal & State	$ 1,047	$ 13,894	$ 19,889	$ 1,737
Foreign	518	2,276	1,639	263
Total current taxes	1,565	16,170	21,528	2,000
Deferred taxes:
U.S. Federal & State	507	(1,284)	(42)	(1,380)
Foreign	3,145	(5,809)	(5,414)	(4,999)
Total deferred taxes	3,652	(7,093)	(5,456)	(6,379)
Actual tax expense (tax benefit)	$ 5,217	$ 9,077	$ 16,072	$ (4,379)