v3.19.3.a.u2

Summary of Significant Accounting Policies - Balances of Financial Instruments Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Interest rate swap, assets | $ 2,911 | $ 17,633
Interest rate swap, liabilities | (24,471) | (1,820)
Fair Value, Measurements, Recurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Interest rate swap, assets | 2,911 | 17,633
Interest rate swap, liabilities | (24,471) | (1,820)
Interest rate derivatives, at fair value, net | (21,560) | 15,813
Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Interest rate swap, assets | 2,911 | 17,633
Interest rate swap, liabilities | (24,471) | (1,820)
Interest rate derivatives, at fair value, net | $ (21,560) | $ 15,813

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