SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Goodwill and Other Intangibles) (Narrative) (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Mar. 31, 2018	Aug. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Goodwill and other intangibles, net	$ 61,309	$ 27,300	$ 35,600

Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

No definition available.

Name:	us-gaap_IntangibleAssetsNetIncludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant