Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments - Summary of Changes in AOCL (Detail)

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Derivative Financial Instruments - Summary of Changes in AOCL (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items]      
Accumulated other comprehensive loss beginning of period $ 2,028,323    
Realized loss reclassified from accumulated other comprehensive loss to interest expense 593 $ 13,185 $ 5,044
Unrealized gain (loss) from changes in the fair value of the effective portion of the interest rate swaps 119 703 (12,104)
Gain (loss) included in other comprehensive loss 712 13,888 (7,060)
Accumulated other comprehensive loss end of period 2,057,737 2,028,323  
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]      
Accumulated Other Comprehensive Income Loss [Line Items]      
Accumulated other comprehensive loss beginning of period (7,587) (21,475) (14,415)
Accumulated other comprehensive loss end of period $ (6,875) $ (7,587) $ (21,475)