Share-Based Compensation - Stock Option Activity (Detail) (CAD) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
Sep. 28, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning balance, Shares	468
Stock options awarded, Shares	392
Options exercised, Shares
Options forfeited or expired, Shares
Ending balance, Shares	860
Exercisable at September 28, 2013	125
Beginning balance, Weighted average exercise price	7.28
Stock options awarded, Weighted average exercise price	9.36
Options exercised, Weighted average exercise price
Options forfeited or expired, Weighted average exercise price
Ending balance, Weighted average exercise price	8.23
Exercisable at September 28, 2013, Weighted average exercise price	9.49

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Weighted average price of options that were either forfeited or expired.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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Number of share options (or share units) exercised during the current period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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