Assets Associated with OneSource Pension Plan Measured at Fair Value (Detail) (Fair Value, Inputs, Level 1, USD $) In Thousands, unless otherwise specified	Oct. 31, 2012	Oct. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	$ 6,654	$ 5,917
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	1,716	1,276
Equity Securities | Large-Cap Growth
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	1,260	1,090
Equity Securities | Large-Cap Value
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	727	1,090
Equity Securities | Small/Mid-Cap Growth
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	334	140
Equity Securities | Small/Mid-Cap Value
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	163	140
Equity Securities | International Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	558	464
Equity Securities | Us Blended Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	53
Debt Securities | Us Blended Equity
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	16
Debt Securities | Long-Term Bond
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	777	157
Debt Securities | Intermediate Bond
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	503	789
Debt Securities | Short-Term Bond
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	541	771
Other securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value Of Plan Assets	$ 6