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Transactions with Related Parties (Altair and Steamship) (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Due to related parties, current	$ 195,000		$ 136,000
Altair Travel Agency S.A. [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	1,311,000	$ 1,238,000
Due to related parties, current	195,000		136,000
Steamship Shipbroking Enterprises [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	1,950,000	1,654,000
Due to related parties, current	0		$ 0
Commissions charged by a related party (Note 4(d))	$ 226,000	$ 1,219,000

X

- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

+ References

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Amount of transactions with related party during the financial reporting period.

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