Long Term Debt - Summary of Components of Long-term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total debt	$ 503,541	$ 506,000
Less: unamortized original issue discount	(16,126)	(19,806)
Less: unamortized debt issuance costs	(3,867)	(5,573)
Total debt, net	483,548	480,621
Current portion of debt	17,000	17,000
Less: current portion of unamortized original issue discount	(4,312)	(3,687)
Less: current portion of unamortized debt issuance costs	(1,740)	(1,624)
Total current portion of debt, net	10,948	11,689
Long-term debt, net	472,600	468,932
First Lien Facility Due 2022
Debt Instrument [Line Items]
Total debt	289,000	306,000
Convertible Debenture Notes Due 2024
Debt Instrument [Line Items]
Total debt	$ 214,541	$ 200,000

Current portion of unamortized debt issuance costs.

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- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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Amount of debt discount to be amortized within one year or within the normal operating cycle, if longer.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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