Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jan. 28, 2012	Jan. 29, 2011
Shareholders' equity:
Preferred shares - authorized shares (in shares)	2,000	2,000
Preferred shares - par value (in dollars per share)	$ 0.01	$ 0.01
Preferred shares - shares issued (in shares)	0	0
Common shares - authorized shares (in shares)	298,000	298,000
Common shares - par value (in dollars per share)	$ 0.01	$ 0.01
Common shares - shares issued (in shares)	117,495	117,495
Common shares - outstanding shares (in shares)	63,609	73,894
Treasury shares - shares (in shares)	53,886	43,601