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Charter arrangements, Additional Information (Details)	12 Months Ended
	Dec. 31, 2021 Vessel Counterparty	Dec. 31, 2020 Vessel Counterparty	Dec. 31, 2019 Vessel Counterparty
Concentration of Risk [Abstract]
Number of vessels	26	27	27
Number of counterparties | Counterparty	5	10	4
Time Charters [Member]
Concentration of Risk [Abstract]
Number of vessels	7	18	5
Spot Market [Member]
Concentration of Risk [Abstract]
Number of vessels	19	9	22

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Number of vessels in operation for the business.

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