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Schedule of Stock Activity Related to Share-Based Compensation (Parenthetical) (Detail) (Restricted Stock Units (RSUs))
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3 Months Ended |
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Mar. 31, 2013
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Minimum
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Restricted Stock Units adjustments, percentage | 0.00% |
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Maximum
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Restricted Stock Units adjustments, percentage | 150.00% |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Percentage Adjustments in Period No definition available.
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