The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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Balance Type:	na
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- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010

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- Details

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Segment information (Details Textual) - USD ($) $ in Millions	1 Months Ended
	Jan. 31, 2017	Sep. 30, 2017	Sep. 30, 2016
Equity Method Investment, Ownership Percentage		50.00%	50.00%
Hoegh Grace Entities [Member]
Equity Method Investment, Ownership Percentage	51.00%
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest	51.00%
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Revolving Credit Facility [Member]
Line of Credit Facility, Fair Value of Amount Outstanding		$ 85
GDF Suez Neptune and the GDF Suez Cape Ann [Member]
Equity Method Investment, Ownership Percentage		50.00%