Contractual interest rate for funds borrowed, under the debt agreement.

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Long-term Debt - Schedule of Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2020
Debt Instrument [Line Items]
Total long term debt	$ 863,032	$ 565,312
Less: current maturities	(30,839)	(23,355)
Long-term debt, less current maturities	832,193	541,957
Senior Notes \| 5.75% Senior Notes Due 2028
Debt Instrument [Line Items]
Total long term debt	296,367	295,770
Unamortized debt issuance costs	$ 3,633	4,230
Notes payable Interest rate	5.75%		5.75%
Medium-term Notes \| Term Loan Agreement
Debt Instrument [Line Items]
Total long term debt	$ 493,265	198,657
Unamortized debt issuance costs	6,735	1,343
Notes Payable
Debt Instrument [Line Items]
Total long term debt	$ 4,172	3,392
Notes Payable \| Minimum
Debt Instrument [Line Items]
Notes payable Interest rate	1.00%
Notes Payable \| Maximum
Debt Instrument [Line Items]
Notes payable Interest rate	5.00%
Notes Payable \| Vehicle and Equipment
Debt Instrument [Line Items]
Total long term debt	$ 69,228	$ 67,493
Notes Payable \| Vehicle and Equipment \| Minimum
Debt Instrument [Line Items]
Notes payable Interest rate	1.90%
Notes Payable \| Vehicle and Equipment \| Maximum
Debt Instrument [Line Items]
Notes payable Interest rate	4.80%