Common Stock Dividends (Tables)

9 Months Ended

Oct. 31, 2011

Common Stock Dividends [Abstract]

Common Stock Dividends, Record Date And Payable Date

Record Date	Payable Date
March 11, 2011	April 4, 2011
May 13, 2011	June 6, 2011
August 12, 2011	September 6, 2011
December 9, 2011	January 3, 2012