Estimated Annual Amortization Expense for Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Estimated Amortization Expense 2013	$ 19,798
Estimated Amortization Expense 2014	17,634
Estimated Amortization Expense 2015	15,401
Estimated Amortization Expense 2016	13,329
Estimated Amortization Expense 2017	11,298
Total	77,460
Customer contracts and relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Amortization Expense 2013	19,434
Estimated Amortization Expense 2014	17,311
Estimated Amortization Expense 2015	15,224
Estimated Amortization Expense 2016	13,152
Estimated Amortization Expense 2017	11,185
Total	76,306
Trademarks and Trade Names
Finite-Lived Intangible Assets [Line Items]
Estimated Amortization Expense 2013	150
Estimated Amortization Expense 2014	150
Estimated Amortization Expense 2015	150
Estimated Amortization Expense 2016	150
Estimated Amortization Expense 2017	86
Total	686
Contract Rights and Other
Finite-Lived Intangible Assets [Line Items]
Estimated Amortization Expense 2013	214
Estimated Amortization Expense 2014	173
Estimated Amortization Expense 2015	27
Estimated Amortization Expense 2016	27
Estimated Amortization Expense 2017	27
Total	$ 468