Schedule of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts Payable and Accrued Liabilities [Line Items]
Trade accounts payable	$ 85,359	$ 75,152
Accrued salaries and wages	43,564	51,845
Accrued dividends	3,148	54,843
Accrued workers' compensation and auto liability	7,379	7,062
Accrued litigation	5,861	14,134
Accrued employee medical insurance	7,035	6,110
Accrued property taxes	27,780	27,900
Accrued interest	9,516	10,142
ROU lease liability	$ 21,646	$ 26,914
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Deferred revenue	$ 8,693	$ 15,387
Construction payable	1,821	7,504
Lease obligation	4,400	8,603
Deferred employer payroll taxes	14,795
Other	33,321	31,866
Accounts payable and accrued expenses, total	$ 274,318	$ 337,462