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Share-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2012
Share-Based Compensation |
Schedule of assumptions used and weighted average fair value for grants |
Expected annual dividend rate |  | 1.23 | %
Risk-free interest rate |  | 0.81 | %
Average expected life (years) |  | 5.6 |
Expected volatility of common stock |  | .409 |
Forfeiture rate |  | 0.0 | %
Weighted average fair value of option grants |  | $ | 4.43 |

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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 -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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