Long-Term Debt - Maturities Of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Less than one year	$ 48,948
One to two years	9,186
Two to three years	9,644
Three to four years	5,001
Over five years	300,000
Gross debt	372,779	$ 270,913
Unamortized debt discount	(1,404)
Unamortized debt issuance costs	(9,653)	(6,838)
Total debt	361,722	264,075
Less: current maturities	(48,292)	(38,200)
Long-term debt	313,430	225,875
2026 Notes (mature February 2026)
Debt Instrument [Line Items]
Less than one year	40,199
Gross debt	40,199	200,000
Unamortized debt issuance costs	(656)
Total debt	39,543
Less: current maturities	(39,543)
MARAD Debt (matures February 2027)
Debt Instrument [Line Items]
Less than one year	8,749
One to two years	9,186
Two to three years	9,644
Three to four years	5,001
Gross debt	32,580	$ 40,913
Unamortized debt issuance costs	(1,586)
Total debt	30,994
Less: current maturities	(8,749)
Long-term debt	22,245
2029 Notes (mature March 2029)
Debt Instrument [Line Items]
Over five years	300,000
Gross debt	300,000
Unamortized debt discount	(1,404)
Unamortized debt issuance costs	(7,411)
Total debt	291,185
Long-term debt	$ 291,185