XML 52 R65.htm IDEA: XBRL DOCUMENT v3.2.0.727
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