Intangible Assets (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Oct. 31, 2014
Intangible Assets [Line Items]
Amortizable intangible assets, net	$ 4,440	$ 1,187
Non-amortizable intangible assets, trade marks	1,387	410
Non-compete agreements
Intangible Assets [Line Items]
Amortizable intangible assets, gross	310	200
Amortizable intangible assets, accumulated amortization	(193)	(135)
Amortizable intangible assets, net	117	65
Customer relationships
Intangible Assets [Line Items]
Amortizable intangible assets, gross	5,100	1,730
Amortizable intangible assets, accumulated amortization	(966)	(608)
Amortizable intangible assets, net	4,134	1,122
Backlog [Member]
Intangible Assets [Line Items]
Amortizable intangible assets, gross	134	75
Amortizable intangible assets, accumulated amortization	(85)	(75)
Amortizable intangible assets, net	49	0
Patents [Member]
Intangible Assets [Line Items]
Amortizable intangible assets, gross	142	0
Amortizable intangible assets, accumulated amortization	(2)	0
Amortizable intangible assets, net	$ 140	$ 0