Derivative Instruments and Fair Value Measurements - Unrealized Gain (Loss) on Derivative Instruments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net	$ 4,616,000	$ 666,000	$ 4,526,000	$ (452,000)
Realized gain (loss) on derivative instruments	5,839,000	74,000	16,254,000	378,000
Forward freight agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net	(556,000)	1,274,000	(561,000)	955,000
Realized gain (loss) on derivative instruments	(444,000)	(77,000)	(1,192,000)	(735,000)
Fuel swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net	5,259,000	(241,000)	5,404,000	(190,000)
Realized gain (loss) on derivative instruments	6,201,000	(210,000)	17,073,000	(3,000)
Interest rate cap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net	(88,000)	(367,000)	(316,000)	(1,217,000)
Realized gain (loss) on derivative instruments	$ 82,000	$ 362,000	$ 373,000	$ 1,116,000

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.