Capitalized Interest - Summary of Interest Costs Incurred, Capitalized, Expensed and Charged to Cost of Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Roll Forward]
Interest capitalized, beginning of period	$ 3,034	$ 4,140	$ 3,499	$ 4,154
Interest incurred	9,665	6,607	16,300	13,106
Interest expense	(9,525)	(6,301)	(16,011)	(12,516)
Interest charged to cost of sales	(501)	(592)	(1,115)	(890)
Interest capitalized, end of period	$ 2,673	$ 3,854	$ 2,673	$ 3,854