Business Acquisition - Additional Information (Detail) (USD $)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Business Acquisition [Line Items]
Purchase price of acquired entity		$ 5,600,000
Business acquisition effective date		Jun. 15, 2011
Sales revenue	30,232,653	19,433,503
Cables Unlimited
Business Acquisition [Line Items]
Sales revenue	$ 10,913,000	$ 2,644,000
Minimum
Business Acquisition [Line Items]
Acquired amortizable intangible assets		6 months
Maximum
Business Acquisition [Line Items]
Acquired amortizable intangible assets		9 years 7 months 6 days