COMBINED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (PARENTHETICAL) (USD $)	Jan. 31, 2012	Oct. 31, 2011	Jan. 31, 2011
Capital stock, without par value, per combined share (in dollars)	$ 0.30	$ 0.30	$ 0.30
Treasury stock, at cost	282,018	282,018	282,018
Unaudited
Capital stock, without par value, per combined share (in dollars)	$ 0.30		$ 0.30
Treasury stock, at cost	282,018		282,018
Audited
Capital stock, without par value, per combined share (in dollars)		$ 0.30
Treasury stock, at cost		282,018