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Computation of Basic and Diluted Net Income Per Common Share (Parenthetical) (Detail) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Mar. 31, 2009
Net Income Loss Per Common Share |  |
Initial debt conversion price | $ 5.48 |
Shares that would be issued upon conversion | 34,703,196 |
Convertible Notes |  |
Net Income Loss Per Common Share |  |
Initial debt conversion price | $ 5.48 |
Shares that would be issued upon conversion | 34,700,000 |
Convertible Notes Hedge Warrant |  |
Net Income Loss Per Common Share |  |
Initial debt conversion price | $ 7.67 | $ 7.67
Shares that would be issued upon conversion | 34,700,000 |

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- Definition Antidilution adjustments of convertible note hedges. + References No definition available. + Details
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- Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
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