Inventories and Other Net (Detail) (CAD) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 30, 2012
Schedule of Inventory [Line Items]
Raw materials	25,354	19,941
Finished goods	77,457	75,660
Inventories, gross	102,811	95,601
Inventory obsolescence provision	(1,174)	(1,015)
Inventories, net	101,637	94,586
Prepaids and other	7,159	12,414
Total Inventories and other, net	108,796	107,000