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Share-Based Compensation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2013
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Mar. 31, 2012
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| Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items] | ||
| Share-based compensation expense | $ 0.6 | $ 3.5 |
| Unrecognized compensation cost related to nonvested common shares | $ 4.7 | |
| Weighted average period for recognition of cost | 3 years 4 months 24 days | |
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- Details
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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