SUBSEQUENT EVENTS(Details Textuals) (USD $)	3 Months Ended		1 Months Ended		12 Months Ended	0 Months Ended	2 Months Ended	12 Months Ended	0 Months Ended			12 Months Ended
	Jan. 31, 2012	Oct. 31, 2011	Nov. 30, 2011 Switchcraft [Member]	Oct. 31, 2011 New Credit Facility Sublimit [Member] Foreign Currency [Member]	Oct. 31, 2011 Old Credit Facility [Member]	Dec. 14, 2011 New Credit Facility [Member]	Dec. 31, 2011 New Credit Facility [Member]	Oct. 31, 2011 New Credit Facility [Member]	Dec. 14, 2011 New Credit Facility Libor Rate [Member]	Dec. 14, 2011 New Credit Facility Base Rate [Member]	Dec. 14, 2011 New Credit Facility Commitment Fee [Member]	Oct. 31, 2011 Credit Facility [Member]
Debt Instrument [Line Items]
Business Acquisition, Effective Date of Acquisition			22-Nov-11
Business Acquisition, Name of Acquired Entity			Switchcraft, Inc.
Business Acquisition, Cost of Acquired Entity, Purchase Price			$ 143,000,000
Maximum amount of borrowing capacity and limit availability under the revolving credit facility		500,000,000		50,000,000	300,000,000	670,000,000						300,000,000
Revolving credit facility description of variable rate basis					Base Rate or LIBOR plus applicable margins
Line of credit facility, interest rate description					Base Rate or LIBOR. The Base Rate is the higher of (i) the Prime Rate or (ii) the Federal Funds rate plus .50	The Base Rate is the highest of (i) the Prime Rate; (ii) the Federal Funds rate plus .50% per annum; and (iii)the Adjusted LIBO Rate determined on a daily basis for an Interest Period of one month plus 1.0% per annum.
Line of credit facility interest rate range minimum									0.75%	0.00%
Line of credit facility interest rate range maximum									2.25%	1.25%
Commitment fee description								A fee is charged on the amount of the unused commitment ranging from .125% to .35% (depending on the Company's leverage ratio).
Line of credit facility, unused capacity, commitment fee percentage minimum											0.125%
Line of credit facility, unused capacity, commitment fee percentage maximum											0.35%
Line of Credit Facility, Expiration Date	In December 2011, the Company entered into a $670 million Revolving Credit Agreement with a bank syndicate, which matures in December 2016 and replaces the current Credit Facility.						2016, December					2013, May
Extension To Maximum Borrowing Capacity						130,000,000
Maximum Borrowing Capacity Option						$ 800,000,000						$ 500,000,000