Debt - Summary of Components of Long-Term Debt Obligations (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 316,245,000	$ 316,250,000
Less: deferred debt discount	(16,724,000)	(26,310,000)
Less: deferred debt issue costs	(2,363,000)	(3,809,000)
Long-term debt, net	297,158,000	286,131,000
Additional paid-in capital	35,304,000	35,306,000
Discount attribution to equity	(1,175,000)	(1,175,000)
Equity component, net	34,129,000	34,131,000
Long-term debt, current portion	0	0
Convertible Note Due 2023
Debt Instrument [Line Items]
Total debt	$ 316,245,000	$ 316,250,000

Debt Instrument, Convertible, Discount (Premium), Attributable to Equity

No definition available.

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- Definition

Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock.

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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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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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- Definition

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.

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No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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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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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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