Schedule of Debt Obligations (Detail) - USD ($) $ in Thousands		Mar. 31, 2021		Dec. 31, 2020
Debt Instrument [Line Items]
Total debt		$ 550,009
Unamortized debt issuance costs		(281)		$ (385)
Total debt	[1],[2]	549,728		564,401
Less current maturities		31,510		28,433
Total long-term debt		518,218		535,968
Senior Secured Notes
Debt Instrument [Line Items]
Total debt		315,566	[3]	317,856
Less current maturities		11,000		8,400
Variable Funding Notes
Debt Instrument [Line Items]
Total debt		100,000		100,000
Senior Secured Term Loan
Debt Instrument [Line Items]
Total debt		79,492		94,755
Less current maturities		19,300		19,300
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Total debt	[4]	53,644	[5]	50,868
Total debt		94,400		94,400
Payroll Protection Program Loan
Debt Instrument [Line Items]
Total debt		$ 1,307		$ 1,307

[1] Carrying amounts include aggregate unamortized debt discount and debt issuance costs.

[2] Includes the 5.75% Convertible Notes accounted for under the fair value option. Refer to Note 7.

[3] The legal final maturity of the Securitization Notes is in January of 2043. As the Company did not repay or refinance the Securitization Notes prior to the anticipated repayment date, beginning January 2020, the Company is no longer required to make previously designated contractual principal payments. Future principal payments will be formulaically based on a percentage of receipts of royalty revenue, and as such are subject market factors outside of the Company’s control. There can be no assurance that all or any future principal payments projected for the Senior Secured Notes will be made in accordance with the projections provided.

[4] Reflects the debt carrying amount which is accounted for under the Fair Value Option in the condensed consolidated balance sheet as of March 31, 2021 and December 31, 2020. The actual principal outstanding balance of the 5.75% Convertible Notes is $94.4 million as of each of March 31, 2021 and December 31, 2020.

[5] Reflects the debt carrying amount which is accounted for under the Fair Value Option in the condensed consolidated balance sheet as of March 31, 2021. The actual principal outstanding balance of the 5.75% Convertible Notes is $94.4 million as of March 31, 2021.