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Fair Value Measurements Schedule of Fair Value, Assets & Liabilities Measured on Recurring Basis (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands | Jun. 30, 2011 | Dec. 31, 2010
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Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets | $ 2,879 | $ 2,879
Carrying (Reported) Amount, Fair Value Disclosure [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets | $ 2,879 | $ 2,879

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + Details
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- Definition The carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=6970148&loc=d3e5728-111685 + Details
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