XML 21 R31.htm IDEA: XBRL DOCUMENT

Restructuring - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Oct. 31, 2012	Jan. 31, 2012
Restructuring And Other [Line Items]
Restructuring expense	$ 0.1		$ 0.1
Restructuring charges due reduction in headcount		$ 0.2

- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References+ Details