Cash Flow Information - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Other Significant Noncash Transactions [Line Items]
Cash paid for interest	$ 34,600,000	$ 30,500,000
Net of capitalized interest	100,000	1,400,000
Decrease in accrued construction costs	4,200,000	14,300,000
First Lien Revolving Facility
Other Significant Noncash Transactions [Line Items]
Line of credit facilities gross borrowings	0
Line of credit facilities gross repayments	$ 0
Restructured Revolver
Other Significant Noncash Transactions [Line Items]
Line of credit facilities gross borrowings		120,000,000.0
Line of credit facilities gross repayments		$ 0