Summary of MSU Performance (Detail) (Market Performance Based Restricted Stock Units, USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2011
Year
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Market Performance Based Restricted Stock Units
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Number of Shares | |
Granted | 138,000 |
Vested and released | (2,556) |
Forfeited | (7,000) |
Nonvested ending balance | 128,000 |
Weighted Average Remaining Contractual Term | |
Nonvested as of December 31, 2011 | 1.63 |
Aggregate Intrinsic Value | |
Nonvested as of December 31, 2011 | $ 3,042 |
X | ||||||||||
- Details
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X | ||||||||||
- Definition
Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other than Options, Nonvested, Total Intrinsic Value No definition available.
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X | ||||||||||
- Details
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X | ||||||||||
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Details
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X | ||||||||||
- Definition
The weighted average period between the balance sheet date and expiration for equity-based awards other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan), which may be expressed in a decimal value for number of years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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