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Impairment Charges and Impairment of Joint Venture Investments - Impairment Charges Measured at Fair Value on Non-Recurring Basis (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items] |  |  |  |  |
Impairment of joint venture investments | $ 0 | $ 0 | $ 0 | $ 9,100 |
Fair Value Measurements [Member] |  |  |  |  |
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items] |  |  |  |  |
Unconsolidated joint venture investments, Fair Value Measurements |  |  |  |  | $ 6,400
Long-lived assets held and used, Fair Value Measurements | 407,100 |  | 407,100 |  | 141,200
Long-lived assets held and used, Total Losses |  |  | 279,000 |  | 38,100
Impairment of joint venture investments |  |  |  |  | 30,700
Fair Value Measurements [Member] | Level 1 [Member] |  |  |  |  |
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items] |  |  |  |  |
Long-lived assets held and used, Fair Value Measurements | 0 |  | 0 |  | 0
Unconsolidated joint venture investments, Fair Value Measurements |  |  |  |  | 0
Fair Value Measurements [Member] | Level 2 [Member] |  |  |  |  |
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items] |  |  |  |  |
Long-lived assets held and used, Fair Value Measurements | 0 |  | 0 |  | 0
Unconsolidated joint venture investments, Fair Value Measurements |  |  |  |  | 0
Fair Value Measurements [Member] | Level 3 [Member] |  |  |  |  |
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items] |  |  |  |  |
Long-lived assets held and used, Fair Value Measurements | $ 407,100 |  | $ 407,100 |  | 141,200
Unconsolidated joint venture investments, Fair Value Measurements |  |  |  |  | $ 6,400

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- Definition Fair value assets and liabilities measured on nonrecurring basis. + References No definition available. + Details
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- Definition Impaired equity method investments fair value disclosure. + References No definition available. + Details
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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=49116238&loc=d3e32787-111569 + Details
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