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Note 15 - Asset Dispositions, Assets Held for Sale and Asset Impairments (Tables) | 9 Months Ended
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Sep. 30, 2020
Notes Tables |
Disclosure of Long Lived Assets Held-for-sale [Table Text Block] |
(in thousands, except for number of vessels data) |  | Number of Vessels |  |  | Three Months Ended March 31, 2020 |  |  | Number of Vessels |  |  | Three Months Ended June 30, 2020 |  |  | Number of Vessels |  |  | Three Months Ended September 30, 2020 |  |  | Number of Vessels |  |  | Nine Months Ended September 30, 2020 |
Beginning balance |  |  | 46 |  |  |  | 39,287 |  |  |  | 38 |  |  | $ | 26,142 |  |  |  | 46 |  |  | $ | 29,064 |  |  |  | 46 |  |  | $ | 39,287 |
Additions |  |  | — |  |  |  |  |  |  |  | 22 |  |  |  | 15,931 |  |  |  | — |  |  |  | — |  |  |  | 22 |  |  |  | 15,931 |
Sales |  |  | (8 | ) |  |  | (2,938 | ) |  |  | (14 | ) |  |  | (7,408 | ) |  |  | (22 | ) |  |  | (9,901 | ) |  |  | (44 | ) |  |  | (20,247 | )
Additional impairment |  |  | — |  |  |  | (10,207 | ) |  |  | — |  |  |  | (5,601 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (15,808 | )
Ending balance |  |  | 38 |  |  |  | 26,142 |  |  |  | 46 |  |  | $ | 29,064 |  |  |  | 24 |  |  | $ | 19,163 |  |  |  | 24 |  |  | $ | 19,163 |

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- Definition Tabular disclosure of long lived assets held for sale. Disclosure may include the description of the facts and circumstances leading to the expected disposal, manner and timing of disposal, the carrying value of the assets held for sale, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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Balance Type: | na
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- References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration