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Note 14 - Financial Instruments - Fair Value of Non-recurring Financial Assets and Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Assets held for sale	$ 43,271
Investments in unconsolidated joint ventures	19,306
Fair Value, Nonrecurring [Member]
Assets held for sale	43,271
Investments in unconsolidated joint ventures	19,306
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets held for sale	0
Investments in unconsolidated joint ventures	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets held for sale	43,271
Investments in unconsolidated joint ventures	19,306
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets held for sale	0
Investments in unconsolidated joint ventures	$ 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=117815213&loc=d3e19207-110258

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X

- Definition

Fair value portion of investments accounted under the equity method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 25
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117311354&loc=d3e32014-111567

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