Debt - Schedule of Net Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Income Expense Net [Abstract]
Interest expense									$ 12,744	$ 13,360	$ 14,428
Interest income									(5,717)	(1,829)	(2,075)
Interest expense net of interest income									7,027	11,531	12,353
Capitalized interest									(1,095)	(760)	(909)
Interest expense, net	$ 911	$ 1,402	$ 1,766	$ 1,853	$ 2,151	$ 2,797	$ 2,672	$ 3,151	$ 5,932	$ 10,771	$ 11,444