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Quarterly Consolidated Financial Information (Unaudited) - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Nov. 30, 2016 | Aug. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |  |
Medical expenses | $ 2.0 | $ 2.3

X
- Definition Medical expenses. + References No definition available. + Details
Name: | ebf_MedicalExpenses
Namespace Prefix: | ebf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_QuarterlyFinancialInformationDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration