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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 28, 2013
STOCK-BASED COMPENSATION |
Schedule of assumptions used in estimating fair value of each option grant |
|  | 2013 |  | 2012 |  | 2011
--- | --- | --- | --- | --- | --- | ---
Expected volatility |  | 33.26% |  | 33.76% |  | 32.50%
Risk-free interest rate |  | 1.16% |  | 0.74% |  | 0.88%
Expected life from vesting date |  | 3.0 yrs |  | 3.0 yrs |  | 3.0 yrs
Dividend yield |  | 0.72% |  | 0.77% |  | 0.82%
Summary of activity of stock plans | Following is a summary of the activity of the stock plans during 2011, 2012 and 2013:
|  | Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term |  | Aggregate Intrinsic Value |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Outstanding at December 25, 2010 |  |  | 1,222,894 |  | $ | 66.22 |  |  |  |  |  |  |
Granted |  |  | 214,206 |  |  | 85.40 |  |  |  |  |  |  |
Exercised |  |  | (306,218 | ) |  | (61.57 | ) |  |  |  |  |  |
Forfeited |  |  | (52,169 | ) |  | (76.12 | ) |  |  |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at December 31, 2011 |  |  | 1,078,713 |  | $ | 70.88 |  |  | 4.68 |  | $ | 22,382 |
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Options vested or expected to vest at December 31, 2011 |  |  | 1,048,182 |  | $ | 70.52 |  |  | 4.63 |  |  | 22,113 |
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Options exercisable at December 31, 2011 |  |  | 618,844 |  | $ | 61.57 |  |  | 3.56 |  |  | 18,441 |
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The weighted average per share fair value of options granted during 2011 was $23.32.
|  | Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term |  | Aggregate Intrinsic Value |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Outstanding at December 31, 2011 |  |  | 1,078,713 |  | $ | 70.88 |  |  |  |  |  |  |
Granted |  |  | 140,007 |  |  | 136.01 |  |  |  |  |  |  |
Exercised |  |  | (341,090 | ) |  | (61.53 | ) |  |  |  |  |  |
Forfeited |  |  | (8,638 | ) |  | (84.18 | ) |  |  |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at December 29, 2012 |  |  | 868,992 |  | $ | 84.91 |  |  | 4.68 |  | $ | 43,410 |
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Options vested or expected to vest at December 29, 2012 |  |  | 845,470 |  | $ | 84.26 |  |  | 4.64 |  |  | 42,765 |
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Options exercisable at December 29, 2012 |  |  | 485,786 |  | $ | 71.06 |  |  | 3.67 |  |  | 30,846 |
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The weighted average per share fair value of options granted during 2012 was $38.17.
|  | Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term |  | Aggregate Intrinsic Value |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Outstanding at December 29, 2012 |  |  | 868,992 |  | $ | 84.91 |  |  |  |  |  |  |
Granted |  |  | 155,254 |  |  | 144.86 |  |  |  |  |  |  |
Exercised |  |  | (216,105 | ) |  | (72.17 | ) |  |  |  |  |  |
Forfeited |  |  | (12,920 | ) |  | (129.08 | ) |  |  |  |  |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at December 28, 2013 |  |  | 795,221 |  | $ | 99.29 |  |  | 4.56 |  | $ | 39,994 |
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Options vested or expected to vest at December 28, 2013 |  |  | 775,237 |  | $ | 98.41 |  |  | 4.51 |  |  | 39,678 |
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Options exercisable at December 28, 2013 |  |  | 464,377 |  | $ | 81.73 |  |  | 3.58 |  |  | 31,508 |
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The weighted average per share fair value of options granted during 2013 was $37.88.
Summary of status of stock options outstanding | Following is a summary of the status of stock options outstanding at December 28, 2013:
|  | Outstanding and Exercisable By Price Range |
--- | --- | --- | ---
|  | Options Outstanding |  | Options Exercisable |
|  | Exercise Price Range |  | Number |  | Weighted Average Remaining Contractual Life |  | Weighted Average Exercise Price |  | Number |  | Weighted Average Exercise Price |
|  | $20.53 - 53.09 |  |  | 53,199 |  | 1.39 years |  | $ | 31.34 |  |  | 38,499 |  | $ | 23.77 |
|  | $57.46 - 86.72 |  |  | 446,370 |  | 3.73 years |  |  | 80.80 |  |  | 372,481 |  |  | 80.49 |
|  | $105.44 - 151.45 |  |  | 295,652 |  | 6.37 years |  |  | 139.45 |  |  | 53,397 |  |  | 132.24 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  |  |  | 795,221 |  |  |  |  |  |  |  | 464,377 |  |  |  |
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Schedule of non-vested stock and restricted stock units |
|  | 2013 |  | 2012 |  | 2011 |
--- | --- | --- | --- | --- | --- | --- | ---
Shares issued |  |  | 47,271 |  |  | 27,293 |  |  | 47,417 |
Weighted-average per share price on grant date |  | $ | 146.72 |  | $ | 132.21 |  | $ | 88.26 |
Compensation expense |  | $ | 3,667 |  | $ | 2,835 |  | $ | 2,004 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -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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- Definition Tabular disclosure of the number and weighted-average exercise prices of non-vested stock and restricted stock units awarded to directors and certain management employees. Also includes the compensation expense associated with the grants. + References No definition available. + Details
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