ACQUISITIONS - Intangible Asset Allocation (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 16, 2015	Jul. 31, 2016
Business Combination Segment Allocation [Line Items]
Intangible assets acquired	$ 128,280
Backlog [Member]
Business Combination Segment Allocation [Line Items]
Intangible assets acquired	8,400
Useful life of intangible assets		9 months
Trade names [Member]
Business Combination Segment Allocation [Line Items]
Intangible assets acquired	13,980
Useful life of intangible assets		15 years
Customer relationships [Member] | Customer lists [Member]
Business Combination Segment Allocation [Line Items]
Intangible assets acquired	$ 105,900
Useful life of intangible assets		20 years