Company's Debt Maturities on Calendar Year Basis (Detail) - USD ($) $ in Thousands		Dec. 31, 2019		Dec. 31, 2018
Debt Instrument [Line Items]
Total		$ 647,435
2020		61,977
2021		61,977
2022		61,977
2023		194,536
2024		42,693
Thereafter		224,275
Senior Secured Notes
Debt Instrument [Line Items]
Total		338,130		$ 365,481
2020		42,693
2021		42,693
2022		42,693
2023		42,693
2024		42,693
Thereafter		124,665
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Total		47,277	[1]	48,076
2023	[1]	47,277
Variable Funding Notes
Debt Instrument [Line Items]
Total		99,610	[2]	$ 95,273
Thereafter	[2]	99,610
Senior Secured Term Loan
Debt Instrument [Line Items]
Total	[3]	162,418
2020	[3]	19,284
2021	[3]	19,284
2022	[3]	19,284
2023	[3]	$ 104,566

[1] Reflects the debt carrying amount which is accounted for under the Fair Value Option in the consolidated balance sheet as of December 31, 2019. The actual principal outstanding balance of the 5.75% Convertible Notes is $94.4 million as of December 31, 2019.

[2] Reflects the net debt carrying amount, effected by the outstanding balance of the original issue discount, in the consolidated balance sheet as of December 31, 2019. The actual principal outstanding balance of the Variable Funding Notes is $100.0 million as of December 31, 2019

[3] Reflects the net debt carrying amount, effected by the outstanding balance of the original issue discount, in the consolidated balance sheet as of December 31, 2019. The actual principal outstanding balance of the Senior Secured Term Loan is $175.6 million as of December 31, 2019.