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INCOME TAXES - Schedule of Provision for Income Taxes, Current and Deferred (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2016
Current:
U.S. federal									$ 2,059	$ 0	$ 0
State and local									429	193	140
Foreign									8,541	8,196	3,172
Total current taxes									11,029	8,389	3,312
Deferred:
U.S. federal									(3,387)	(1,342)	0
State and local									(718)	13	0
Foreign									523	(2,208)	(995)
Total deferred taxes									(3,582)	(3,537)	(995)
Total	$ 4,118	$ (843)	$ 1,913	$ 2,259	$ 1,555	$ 2,639	$ 547	$ 111	$ 7,447	$ 4,852	$ 2,317

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