Components of Purchase Price at Fair Value (Parenthetical) (Detail) - shares			9 Months Ended
	Jun. 02, 2015	Nov. 02, 2014	Jul. 31, 2015
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			50,467
Rel-Tech Electronics, Inc
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	50,467
Comnet Telecom Supply Inc
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		252,381