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Note 12 - Accrued Charter Revenue, Current and Non-current and Unearned Revenue, Current and Non-current - Schedule of Accrued Revenue (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Accrued Revenue for 2017	$ (5,714)
Accrued Revenue for 2018	(8,922)
Accrued Revenue for 2019	(6,602)
Accrued Revenue for 2020	(802)
Total	$ (22,040)

X

- Definition

Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the four fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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X

- Definition

Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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X

- Definition

Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- Definition

Amount of receivables under long-term contracts that have not been billed and were not billable that are expected to be collected in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

X

- Definition

Amount of unbilled receivables under long-term contracts that have not been billed and were not billable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 910
-SubTopic 310
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68065756&loc=d3e49336-109356

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