Long-Term Debt - Schedule Of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount	$ 313,850
Unamortized debt discounts		$ (45,692)
Unamortized debt issuance costs	(8,840)	(9,477)
Total debt	305,010	349,563
Less: current maturities	(42,873)	(90,651)
Long-term debt	262,137	258,912
Term Loan Repaid September 2021
Debt Instrument [Line Items]
Principal amount		29,750
Nordea Q5000 Loan Matured January 2021
Debt Instrument [Line Items]
Principal amount		53,572
Convertible Senior Notes Maturing May 2022
Debt Instrument [Line Items]
Principal amount	35,000	35,000
Unamortized debt issuance costs	(64)
Total debt	34,936
Less: current maturities	(34,936)
Convertible Senior Notes Maturing September 2023
Debt Instrument [Line Items]
Principal amount	30,000	30,000
Unamortized debt issuance costs	(314)
Total debt	29,686
Long-term debt	29,686
Convertible Senior Notes Maturing February 2026
Debt Instrument [Line Items]
Principal amount	200,000	200,000
Unamortized debt issuance costs	(5,901)
Total debt	194,099
Long-term debt	194,099
MARAD Debt Maturing February 2027
Debt Instrument [Line Items]
Principal amount	48,850	$ 56,410
Unamortized debt issuance costs	(2,561)
Total debt	46,289
Less: current maturities	(7,937)
Long-term debt	$ 38,352

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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