Long-Term Debt - Maturities Of Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Dec. 01, 2023
Debt Instrument [Line Items]
Less than one year	$ 8,965
One to two years	9,412
Two to three years	9,881
Over five years	300,000
Gross debt	328,258	$ 372,779
Unamortized debt discount	(1,351)
Unamortized debt issuance costs	(8,743)
Total debt	318,164
Less: current maturities	(8,965)	(48,292)
Long-term debt	309,199	313,430
MARAD Debt (matures February 2027)
Debt Instrument [Line Items]
Less than one year	8,965
One to two years	9,412
Two to three years	9,881
Gross debt	28,258	32,580
Unamortized debt issuance costs	(1,463)
Total debt	26,795
Less: current maturities	(8,965)
Long-term debt	17,830
2029 Notes (mature March 2029)
Debt Instrument [Line Items]
Over five years	300,000
Gross debt	300,000	$ 300,000	$ 300,000
Unamortized debt discount	(1,351)
Unamortized debt issuance costs	(7,280)
Total debt	291,369
Long-term debt	$ 291,369