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Fair Value Disclosures - Quantitative Information about Level 3 Fair Value Measurements (Detail) (Other investments, at fair value [Member], Equity securities [Member], Star Asia [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012
Other investments, at fair value [Member] | Equity securities [Member] | Star Asia [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Fair Value | $ 30,169
Weighted average, Discount rate on debt | 6.82%
Range of Significant Inputs, Discount rate on debt | 6.82%

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- Definition Fair value inputs, weighted average discount rate. + References No definition available. + Details
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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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Period Type: | instant

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- Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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