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

Allowance for estimated product returns and credit memos which is recognized as a deduction from sales.

No definition available.

Name:	brc_RevenueRecognitionSalesReturnReserveForSalesReturns
Namespace Prefix:	brc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant