Capitalized Interest - Summary of Interest Incurred, Capitalized and Expensed Included in Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest Expense [Abstract]
Interest cost incurred	$ 1,865	$ 3,822	$ 6,611	$ 7,668
Interest capitalized				396
Interest expense	$ 1,865	$ 3,822	$ 6,611	$ 7,272