Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended	9 Months Ended					12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011	Jul. 31, 2013 Location	Oct. 31, 2012 Additional	Jul. 31, 2013 Domestic country	Jul. 31, 2013 Domestic country Linc	Jul. 31, 2013 Domestic country HHA	Jul. 31, 2013 Domestic country Air Serv	Jul. 31, 2013 State and Local Jurisdiction	Oct. 31, 2013 State and Local Jurisdiction	Oct. 31, 2012 State and Local Jurisdiction	Oct. 31, 2013 State and Local Jurisdiction Expiration Date Between 2014 and 2033 Minimum	Oct. 31, 2013 State and Local Jurisdiction Expiration Date Between 2014 and 2033 Maximum	Oct. 31, 2013 Internal Revenue Service (IRS)	Oct. 31, 2012 Internal Revenue Service (IRS)
Income Taxes [Line Items]
Unrecognized tax benefits, related to re-measurement		$ 6,900,000
Federal Employment based tax credits	4,100,000	1,900,000			1,900,000
Operating loss carryforwards											12,400,000
Operating losses expiration period													2014	2033
Other, net	189,000	242,000	(796,000)								800,000	500,000			(600,000)	(300,000)
Unrecognized tax benefits	87,610,000	88,448,000	95,956,000
Unrecognized tax benefits, if recognized	80,900,000
Uncertain tax positions, interest and penalties accrued	1,300,000	1,100,000
Uncertain tax positions, interest and penalties recognized and expensed	200,000	200,000
Income tax returns open for examination						October 31, 2010 through October 31, 2012	December 31, 2010	December 31, 2010 through October 31, 2012	June 30, 2010 through October 31, 2012	2009-2013
Number of states in which entity operates				50
Maximum decrease in unrecognized tax benefits that is reasonably possible	$ 2,900,000