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4. Joint Ventures: Schedule of percentage ownership and method of accounting (Details)	Mar. 31, 2016	Dec. 31, 2015
Details
Investment Owned, Percent of Net Assets	67.00%	67.00%
Investment owned percentage of net assets 2	100.00%	100.00%
Investment owned percentage of net assets 3	50.00%

X

- Definition

Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

+ References

No definition available.

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- Definition

Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

+ References

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- Definition

Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12.3)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010

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-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
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