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Summary of Significant Accounting Policies Revenue Recognition (Details) - USD ($) $ in Thousands | Jul. 31, 2018 | Jul. 31, 2017
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Accounting Policies [Abstract] |  |
Revenue Recognition Sales Return Reserve For Sales Returns | $ 4,546 | $ 3,873

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- Definition Allowance for estimated product returns and credit memos which is recognized as a deduction from sales. + References No definition available. + Details
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Namespace Prefix: | brc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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