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股票补偿 (Summary Of Restricted Stock Award And Unit Activity) (Details) (USD $)
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9月结束 |
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9月. 30, 2012
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| 股权薪酬[摘要] | |
| Number of Unvested Restricted Shares as of December 31, 2011 | 203,348 |
| Unvested Restricted Shares, Weighted Average Grant Date Fair Value as of December 31, 2011 | $ 26.02 |
| 授予，未授予限制性股份数量 | 183,500 |
| Granted, Weighted Average Grant Date Fair Value | $ 36.09 |
| 已授予，未授予的限制性股份数量 | (96,331) |
| 授予日的加权平均公允价值 | $ 30.17 |
| 被没收的未授予限制性股份数目 | (9,334) |
| Forfeited, Weigthed Average Grant Date Fair Value | $ 23 |
| Number of Unvested Restricted Shares as of June 30, 2012 | 281,183 |
| Unvested Restricted Shares, Weighted Average Grant Date Fair Value as of June 30, 2012 | $ 31.28 |
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——细节
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——定义
基于股权的支付工具的数量, 不包括股票（或单位）期权, that were forfeited during the reporting period. 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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——定义
The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan. 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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——定义
The number of grants made during the period on other than stock (or unit) option plans (for example, 幽灵库存或单位计划, 股票或单位升值权计划, 服务目标计划). 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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——定义
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, 幽灵库存或单位计划, 股票或单位升值权计划, 服务目标计划). 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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——定义
The number of non-vested equity-based payment instruments, 不包括股票（或单位）期权, that validly exist and are outstanding as of the balance sheet date. 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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——定义
The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, 幽灵库存或单位计划, 股票或单位升值权计划, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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——定义
基于股权的支付工具的数量, 不包括股票（或单位）期权, 在本报告所述期间归属. 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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——定义
The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, 获得或保留股份或单位, 其他乐器, or cash in accordance with the terms of the arrangement. 参考文献1:http://www.xbrl.org/2003/role/presentationRef
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