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Note 11 - Fair Value of Financial Instruments and Derivative Instruments - Fair Value of Non-recurring Financial Assets and Liabilities (Details) - Vessels [Member] $ in Thousands	Jun. 30, 2021 USD ($)
Vessels held for sale	$ 25,887
Fair Value, Nonrecurring [Member]
Vessels held for sale	25,887
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Vessels held for sale	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Vessels held for sale	25,887
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Vessels held for sale	$ 0

X

- Definition

Fair value portion of assets classified as held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

+ Details

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Period Type:	instant

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