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Investment in Unconsolidated Ventures - Summarized Income Statement Information additional information (Detail) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Equity Method Investments    
Schedule of Equity Method Investments [Line Items]    
Long-term debt, current maturities $ 125,498 $ 89,756
Equity Method Investments | Non-recourse Debt    
Schedule of Equity Method Investments [Line Items]    
Long-term debt, current maturities 108,675 $ 78,557
242, LLC    
Schedule of Equity Method Investments [Line Items]    
Unrecognized basis difference on equity method investment 1,372  
LM Land Holdings, LP    
Schedule of Equity Method Investments [Line Items]    
Unrecognized basis difference on equity method investment $ 578