Schedule of Debt Obligations (Detail) - USD ($) $ in Thousands		Mar. 31, 2020		Dec. 31, 2019
Debt Instrument [Line Items]
Total debt		$ 635,928
Unamortized debt issuance costs		(941)		$ (1,714)
Total debt	[1],[2]	634,987		645,721
Less current maturities		32,255		61,976
Total long-term debt		602,732		583,745
Senior Secured Notes
Debt Instrument [Line Items]
Total debt		330,551	[3]	338,130
Less current maturities		13,000		42,700
Variable Funding Notes
Debt Instrument [Line Items]
Total debt		100,000		99,610
Senior Secured Term Loan
Debt Instrument [Line Items]
Total debt		158,892		162,418
Less current maturities		19,300		19,300
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Total debt	[4]	46,485	[5]	47,277
Total debt		$ 94,400		$ 94,400

[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. See to Note 6.

[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 be 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, 2020 and December 31, 2019. The actual principal outstanding balance of the 5.75% Convertible Notes is $94.4 million and $94.4 million as of March 31, 2020 and December 31, 2019, respectively.

[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, 2020. The actual principal outstanding balance of the 5.75% Convertible Notes is $94.4 million as of March 31, 2020.