Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) $ in Thousands		3 Months Ended				12 Months Ended
	Jul. 31, 2017 reporting_unit	Oct. 29, 2017 USD ($) reporting_unit	Jul. 30, 2017 USD ($)	Apr. 30, 2017 USD ($)	Jan. 29, 2017 USD ($)	Oct. 29, 2017 USD ($) reporting_unit	Oct. 30, 2016 USD ($)	Nov. 01, 2015 USD ($)
Goodwill [Line Items]
Number of reporting units \| reporting_unit						6
Goodwill impairment		$ 6,000	$ 0	$ 0	$ 0	$ 6,000	$ 0	$ 0
Goodwill		$ 148,291				$ 148,291	$ 154,271	158,026
Acquired finite-lived intangible assets, weighted average useful life						15 years	15 years
Intangible asset amortization						$ 9,620	$ 9,638	16,903
Metal Components
Goodwill [Line Items]
Number of reporting units \| reporting_unit	3	2				5
Goodwill impairment						$ 6,000
Goodwill		$ 133,981				$ 133,981	139,961	143,716
Engineered Building Systems
Goodwill [Line Items]
Number of reporting units \| reporting_unit						1
Goodwill impairment						$ 0
Goodwill		14,310				14,310	$ 14,310	$ 14,310
CENTRIA
Goodwill [Line Items]
Goodwill impairment						6,000
CENTRIA \| Metal Components
Goodwill [Line Items]
Goodwill		$ 5,400				$ 5,400