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Revenues - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 152,760,888	$ 150,204,527	$ 145,003,021
Unearned revenue	1,912,239	1,789,720
Voyage Charters [Member]
Disaggregation of Revenue [Line Items]
Contract with customer receivable	1,500,000	2,100,000
Contract fulfilment cost	270,514	298,984
Voyage Charters [Member] | Demurrage [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 3,400,000	$ 4,100,000	$ 2,400,000

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right to consideration is unconditional.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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