Consolidated Balance Sheets (Parenthetical) (USD $)	May 04, 2013	Feb. 02, 2013
Preferred shares, no par value
Preferred shares, shares authorized	10,000,000	10,000,000
Preferred shares, shares issued
Preferred shares, shares outstanding
Common shares, no par value
Common shares, shares authorized	150,000,000	150,000,000
Common shares, shares issued	40,673,674	40,246,247
Common shares, shares outstanding	40,673,674	40,246,247