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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands | Apr. 30, 2019 | Jul. 31, 2018
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Disclosure Fair Value Measurements Additional Information [Abstract] |  |
Debt, Fair Value | $ 52,092 | $ 55,707
Debt, Carrying Value | $ 50,303 | $ 52,618

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- Definition Disclosure Fair Value Measurements Additional Information [Abstract] + References No definition available. + Details
Name: | brc_DisclosureFairValueMeasurementsAdditionalInformationAbstract
Namespace Prefix: | brc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the aggregate of total long-term debt, including current maturities and short-term debt. + References No definition available. + Details
Name: | us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
Name: | us-gaap_LongTermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant