Schedule III - Changes in Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Balance at beginning of period	$ 504,651	$ 414,331	$ 407,349
Depreciation	222,580	130,851	115,497
Depreciation on disposed property	(6,653)	(40,952)	(101,967)
Other	7,598	421	(6,548)
Balance at end of period	$ 728,176	$ 504,651	$ 414,331