Derivative Instruments and Fair Value Measurements - Unrealized Gain (Loss) on Derivative Instruments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net	$ 5,344,327	$ (18,098)	$ 13,670,475	$ (1,530,875)
Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative gain (loss)	471,511	19,924	2,153,740
Forward freight agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net	4,891,791	(57,765)	11,032,675	60,405
Fuel swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net				(1,167,192)
Interest rate cap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on derivative instruments, net	$ (18,975)	$ 19,743	$ 484,060	$ (424,088)