Stock-Based Compensation Expense Included In General And Administrative Expenses (Detail) (CAD) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Apr. 01, 2012
Share Based Compensation [Line Items]
RSUs	1,102		2,658
Stock options and tandem SARs	5,075		3,745
DSUs	1,210	[1]	778	[1]
Total stock-based compensation expense	7,387	[2]	7,181	[2]

[1] Deferred share units ("DSUs").

[2] Generally included in General and administrative expenses on the Condensed Consolidated Statement of Operations.