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Quarterly Results of Operations - Summary of Quarterly Results of Operations (Parenthetical) (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]        
Gain loss on sale of properties $ 185,800 $ 31,380 $ 225,406 $ 161,164