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Long-Term Debt - Maturities Of Long-Term Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Less than one year | $ 38,333 |
One to two years | 8,749 |
Two to three years | 9,186 |
Three to four years | 209,644 |
Four to five years | 5,001 |
Gross debt | 270,913 |
Unamortized debt issuance costs | (6,838) | $ (8,840)
Total debt | 264,075 | 305,010
Less: current maturities | (38,200) | (42,873)
Long-term debt | 225,875 | 262,137
2023 Notes (mature September 2023) |  |
Debt Instrument [Line Items] |  |
Less than one year | 30,000 |
Gross debt | 30,000 | 30,000
Unamortized debt issuance costs | (133) |
Total debt | 29,867 |
Less: current maturities | (29,867) |
2026 Notes (mature February 2026) |  |
Debt Instrument [Line Items] |  |
Three to four years | 200,000 |
Gross debt | 200,000 | 200,000
Unamortized debt issuance costs | (4,632) |
Total debt | 195,368 |
Long-term debt | 195,368 |
MARAD Debt (matures February 2027) |  |
Debt Instrument [Line Items] |  |
Less than one year | 8,333 |
One to two years | 8,749 |
Two to three years | 9,186 |
Three to four years | 9,644 |
Four to five years | 5,001 |
Gross debt | 40,913 | $ 48,850
Unamortized debt issuance costs | (2,073) |
Total debt | 38,840 |
Less: current maturities | (8,333) |
Long-term debt | $ 30,507 |

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