Assets and Liabilities Held for Sale (Details) $ in Thousands	Feb. 28, 2018 USD ($)
Discontinued Operations and Disposal Groups [Abstract]
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents	$ 6,844

Amount classified as cash and cash equivalents attributable to disposal group held for sale or disposed of.

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