Summary Of Fair Value Of Derivative Instruments On Consolidated Balance Sheet (Detail) (CAD) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 30, 2012
Derivatives Designated As Cash Flow Hedging Instruments | Forward Currency Contracts
Derivatives, Fair Value [Line Items]
Fair Value Assets	2,361	[1]	494	[1]
Fair value liability	(438)	[1]	(2,315)	[1]
Derivatives Designated As Cash Flow Hedging Instruments | Forward Currency Contracts | Accounts Receivable
Derivatives, Fair Value [Line Items]
Fair value asset (liability)	1,923	[1]
Derivatives Designated As Cash Flow Hedging Instruments | Forward Currency Contracts | Accounts Payable
Derivatives, Fair Value [Line Items]
Fair value asset (liability)			(1,821)	[1]
Derivatives Designated As Cash Flow Hedging Instruments | Interest Rate Swap | Ad Fund
Derivatives, Fair Value [Line Items]
Fair Value Assets	0	[2]	0	[2]
Fair value liability	(482)	[2]	0	[2]
Fair value asset (liability)			0	[2]
Derivatives Designated As Cash Flow Hedging Instruments | Interest Rate Swap | Other Long-Term Liabilites | Ad Fund
Derivatives, Fair Value [Line Items]
Fair value asset (liability)	(482)	[2]
Derivatives Not Designated As Hedging Instruments | Forward Currency Contracts
Derivatives, Fair Value [Line Items]
Fair Value Assets	92	[1]	5	[1]
Fair value liability	(6)	[1]	(198)	[1]
Derivatives Not Designated As Hedging Instruments | Forward Currency Contracts | Accounts Receivable
Derivatives, Fair Value [Line Items]
Fair value asset	86	[1]
Derivatives Not Designated As Hedging Instruments | Forward Currency Contracts | Accounts Payable
Derivatives, Fair Value [Line Items]
Fair value asset			(193)	[1]
Derivatives Not Designated As Hedging Instruments | TRS
Derivatives, Fair Value [Line Items]
Fair Value Assets	14,257	[3]	8,614	[3]
Fair value liability	0	[3]	(1,110)	[3]
Derivatives Not Designated As Hedging Instruments | TRS | Other Long-Term Assets
Derivatives, Fair Value [Line Items]
Fair value asset	14,257	[3]	7,504	[3]

[1] Notional value as at March 31, 2013 of $165.3 million (fiscal 2012: $195.1 million), with maturities ranging between April 2013 and March 2014; no associated cash collateral.

[2] Notional value as at March 31, 2013 of $33.8 million (fiscal 2012: $nil), with maturities through fiscal 2019; no associated cash collateral.

[3] TRS contracts cover 1.0 million of the Company's underlying common shares. The notional value and associated cash collateral, in the form of bearer deposit notes (see note 7), was $41.4 million as at March 31, 2013 (fiscal 2012: $41.4 million). The TRS have maturities annually, in May, between fiscal 2015 and fiscal 2019.