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Note 7 - Affiliates Balances - Balances with Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Due from related parties	$ 62,474	$ 62,050
Due to related parties	56,356	53,194
Net due from affiliates	6,118	8,856
Sonatide [Member]
Due from related parties	41,843	41,623
Due to related parties	35,725	32,767
DTDW [Member]
Due from related parties	20,631	20,427
Due to related parties	$ 20,631	$ 20,427

X

- Definition

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

+ References

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X

- Definition

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date within one year where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

+ References

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