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Share-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Stock-based Compensation Expense | A summary of stock-based compensation expense for the three months ended March 31, 2013 and 2012 is as follows:
| For the Three Months Ended March 31,
| 2013 |  | 2012
Stock Options | $ | 487,000 |  |  | $ | 475,000 |
Restricted Stock | 7,000 |  |  | — |
Employee Stock Purchase Plan (ESPP) | 89,000 |  |  | 85,000 |
Total pre-tax stock-based compensation expense charged against income (1) | $ | 583,000 |  |  | $ | 560,000 |
(1) | Stock-based compensation expense is recorded in the selling, general and administrative caption in our consolidated statements of comprehensive income.
Summary Of Other Information Of Stock Option Plans | Other information pertaining to activity of our stock awards during the three months ended March 31, 2013 and 2012 was as follows:
| March 31, 2013 |  | March 31, 2012
Total grant-date fair value of stock awards granted | $ | 3,269,000 |  |  | $ | 2,438,000 |
Total fair value of stock awards vested during period | $ | 1,897,000 |  |  | $ | 1,870,000 |
Total unrecognized compensation expense related to non-vested stock awards | $ | 6,349,000 |  |  | $ | 5,422,000 |
A summary of our stock option activity is as follows:
| Stock Options Outstanding
| Number of Shares |  | Weighted Average Exercise Price
December 31, 2012 | 2,632,000 |  |  | $ | 13.18 |
Granted | 564,000 |  |  | 23.50 |
Cancelled | (16,000 | ) |  | 19.14 |
Exercised | (280,000 | ) |  | 13.15 |
March 31, 2013 | 2,900,000 |  |  | $ | 15.15 |
Summarized Information Of Stock Options Outstanding | The following table summarizes other information about stock options at March 31, 2013.
|  | Stock Options
Range of exercise prices |  | $3.68 - 23.50 |
Outstanding: |  |
Weighted average remaining contractual life (years) |  | 6.80 |
Aggregate intrinsic value |  | $ | 30,385,000 |
Exercisable: |  |
Number of shares |  | 1,275,000 |
Weighted average remaining contractual life (years) |  | 4.70 |
Aggregate intrinsic value |  | $ | 18,663,000 |
Assumption For Fair Value Of Options Granted | The fair value of stock awards granted in 2013 and 2012 was estimated on the date of grant using the Black-Scholes option valuation model based on the following assumptions:
| March 31, 2013 |  | March 31, 2012
Risk-free interest rate | 1.5% |  | 1.3%
Weighted average expected life in years | 6.0 years |  | 6.8 years
Expected volatility | 38.9% |  | 39.2%
Dividend yield | 2.8% |  | 3.6%
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] | The stock-based compensation expense associated with our ESPP was estimated on the date of grant using the Black-Scholes option valuation model based on the following assumptions:
| March 31, 2013 |  | March 31, 2012
Risk-free interest rate | 0.24% |  | 0.19%
Weighted average expected life in years | 1.0 year |  | 1.0 year
Expected volatility | 27.6% |  | 36.5%
Dividend yield | 2.8% |  | 3.6%

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 + Details
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