v2.4.0.6

Related-party Transactions - Additional Information (Detail) (USD $) | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2012 | Sep. 07, 2010 Philips Pension Trustees Limited [Member] | Dec. 31, 2012 PPTL Investment LP [Member] Transactions
Related Party Transaction [Line Items] |  |  |
Annual advisory fee | $ 25,000 |  |
Aggregate amount of advisory fee | $ 125,000 |  |
Common stock purchased |  | 42,715,650 | 22,141,217
Number of transactions involved during acquisition |  |  | 6

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- Definition Aggregated Advisory Fee for Related Parties + References No definition available. + Details
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- Details
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