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SHARE-BASED COMPENSATION AND BENEFIT PLANS (Tables) | 12 Months Ended
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Dec. 31, 2014
Summary of Stock Option Activity | The following is a summary of stock option activity under the 2014 Plan and the 2001 Plan as of and for the year ended December 31, 2014:
|  | Options |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value |
Options outstanding at December 31, 2013 |  |  | 267,700 |  |  | $ | 65.30 |  |  |  |  |  |  |  |  |
Granted |  |  | 50,000 |  |  |  | 97.34 |  |  |  |  |  |  |  |  |
Exercised |  |  | (64,000 | ) |  |  | 58.53 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (11,250 | ) |  |  | 68.49 |  |  |  |  |  |  |  |  |
Expired |  |  | (1,000 | ) |  |  | 60.40 |  |  |  |  |  |  |  |  |
Options outstanding at December 31, 2014 |  |  | 241,450 |  |  | $ | 73.62 |  |  |  | 2.47 |  |  | $ | 8,060 |
Options exercisable at December 31, 2014 |  |  | 82,533 |  |  | $ | 62.69 |  |  |  | 1.46 |  |  | $ | 3,657 |
Summary of Non-Vested (Restricted) Stock Activity | The following is a summary of non-vested (restricted) stock activity as of and for the year ended December 31, 2014:
|  | Shares |  |  | Weighted- Average Grant Date Fair Value |
Non-vested (restricted) stock outstanding at December 31, 2013 |  |  | 2,487,292 |  |  | $ | 40.70 |
Granted |  |  | 218,725 |  |  |  | 96.84 |
Vested |  |  | (57,300 | ) |  |  | 45.71 |
Forfeited |  |  | (5,000 | ) |  |  | 56.69 |
Non-vested (restricted) stock outstanding at December 31, 2014 |  |  | 2,643,717 |  |  | $ | 45.21 |
Valuation Assumptions Used for Stock Option Awards | The following table presents the weighted-average assumptions used for stock options granted:
Years Ended December 31, |  | 2014 |  |  | 2013 |  |  | 2012 |
Expected term in years |  |  | 4.25 |  |  |  | 4.25 |  |  |  | 4.25 |
Risk-free interest rate |  |  | 1.35 | % |  |  | 0.82 | % |  |  | 0.57 | %
Expected volatility |  |  | 22.07 | % |  |  | 24.56 | % |  |  | 31.40 | %
Expected dividend yield |  |  | 1.69 | % |  |  | 2.20 | % |  |  | 3.49 | %
Grant date fair value |  | $ | 15.75 |  |  | $ | 13.33 |  |  | $ | 12.90 |
Share-Based Compensation Expense | The following table provides information on share-based compensation expense:
Years Ended December 31, |  | 2014 |  |  | 2013 |  |  | 2012 |
Stock options |  | $ | 801 |  |  | $ | 884 |  |  | $ | 846 |
Non-vested (restricted) stock |  |  | 10,672 |  |  |  | 9,083 |  |  |  | 7,093 |
Share-based compensation expense |  | $ | 11,473 |  |  | $ | 9,967 |  |  | $ | 7,939 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited 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 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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