Quarterly report pursuant to Section 13 or 15(d)

Summary of Liabilities Measured at Fair Value on a Recurring Basis (Detail)

v3.19.3
Summary of Liabilities Measured at Fair Value on a Recurring Basis (Detail) - Fair Value Measurements, Recurring - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Interest rate swap liabilities [1] $ (18,988) $ (5,093)
Level 3    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Interest rate swap liabilities [1] $ (18,988) $ (5,093)
[1] See further discussion of interest rate swaps at Note 6