Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
Derivative Financial Instruments - Summary of Changes in AOCL (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Derivative Instruments And Hedging Activities Disclosure [Abstract]      
Accumulated other comprehensive loss beginning of period $ (21,475) $ (14,415) $ (13,005)
Realized loss reclassified from accumulated other comprehensive loss to interest expense 13,185 5,044 5,229
Unrealized gain (loss) from changes in the fair value of the effective portion of the interest rate swaps 703 (12,104) (6,639)
Gain (loss) included in other comprehensive loss 13,888 (7,060) (1,410)
Accumulated other comprehensive loss end of period $ (7,587) $ (21,475) $ (14,415)