v2.4.0.8

Capital stock (Tables) | 12 Months Ended
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Dec. 28, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  |  |  |  |  | Weighted- |  |
|  |  |  |  |  |  | average |  |
|  |  |  |  | Weighted- | remaining |  |
|  |  |  |  | average | contractual | Aggregate
|  |  |  | Options | exercise price | term (years) | intrinsic value
Outstanding at beginning of year | 3,687,500 | $ | 5.46 |  |  |
Granted | 1,054,000 |  | 7.45 |  |  |
Exercised | (440,240) |  | 4.19 |  |  |
Forfeited or expired | (276,800) |  | 6.51 |  |  |
Outstanding at end of year | 4,024,460 | $ | 5.85 | 6.7 | $ | 16,747
Exercisable at end of year | 1,119,680 | $ | 4.80 | 3.7 | $ | 5,839
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  |  |  | December 28, 2013 | December 29, 2012 | December 31, 2011
Dividend yield(1) | 0% | 0% | 0%
Expected volatility(2) | 63.1% | 65.8% | 68.0%
Risk-free interest rate(3) | 1.3% | 1.2% | 1.8%
Expected life of options (years)(4) | 6.5 | 6.5 | 6.0
(1) Determined based on expected annual dividend yield at the time of grant. (2) Determined based on historical volatility of the Company's common shares over the expected life of the option. (3) Determined based on the yield on U.S. Treasury zero-coupon issues with maturity dates equal to the expected life of the option. (4) For the years ended December 28, 2013 and December 29, 2012, determined using simplified method, as the Company changed the term of its stock option grants from six years to 10 years and, as a result, historical exercise data may no longer provide a reasonable basis upon which to estimate expected life. For the year ended January 1, 2011, d etermined based on historical exercise and forfeiture patterns.
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block] |
|  |  |  |  |  | Vested |  | Weighted- | Total | Weighted-
| Exercise price range | outstanding |  | average price | outstanding | average price
Expiry date |  | Low |  |  | High | options |  | (vested) | options |  | (total)
2014 | $ | 4.06 |  | $ | 13.35 | 170,500 | $ | 5.69 | 170,500 | $ | 5.69
2015 |  | 0.91 |  |  | 1.92 | 277,080 |  | 1.64 | 402,860 |  | 1.64
2016 |  | 4.45 |  |  | 5.62 | 211,300 |  | 4.50 | 403,300 |  | 4.50
2017 |  | 4.88 |  |  | 7.72 | 266,800 |  | 7.11 | 725,200 |  | 7.12
2022 |  | 5.14 |  |  | 5.73 | 194,000 |  | 5.66 | 1,269,600 |  | 5.57
2023 |  | 7.09 |  |  | 8.23 | - |  | - | 1,053,000 |  | 7.45
|  |  |  |  |  | 1,119,680 | $ | 4.80 | 4,024,460 | $ | 5.85

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- Definition Tabular disclosure of the following for fully vested share options (or share units) and share options expected to vest at the date of the latest statement of financial position: the number, weighted-average exercise price (or conversion ratio), aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term of options (or share units) outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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