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Fair Value - Information About our Fixed Rate Financial instruments not Measured at Fair Value (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt $ 389,782 $ 432,744
Senior Notes [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt $ 230,560 250,000
Interest rate percentage 8.50%  
Reported Value Measurement [Member] | Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan Secured by Real Estate Fair Value $ 0 3,574
Fixed rate debt, fair value (346,090) (370,348)
Estimate of Fair Value Measurement [Member] | Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan Secured by Real Estate Fair Value 0 4,859
Fixed rate debt, fair value $ (321,653) $ (359,131)