3 - Marketable Debt Securities: Available-for-sale Securities (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Amortized Cost Basis	$ 138,253,453	$ 128,031,318
Available-for-sale Securities, Gross Unrealized Gain	5,821,074	5,173,683
Available-for-sale Securities, Gross Unrealized Loss	(212,362)	(357,928)
Available-for-sale Securities, Estimated Fair Value	143,862,165	132,847,073
US States and Political Subdivisions Debt Securities
Available-for-sale Securities, Amortized Cost Basis	138,123,137	127,901,002
Available-for-sale Securities, Gross Unrealized Gain	5,622,609	4,885,012
Available-for-sale Securities, Gross Unrealized Loss	(212,362)	(357,928)
Available-for-sale Securities, Estimated Fair Value	143,533,384	132,428,086
Corporate Debt Securities
Available-for-sale Securities, Amortized Cost Basis	130,316	130,316
Available-for-sale Securities, Gross Unrealized Gain	198,465	288,671
Available-for-sale Securities, Estimated Fair Value	$ 328,781	$ 418,987

Represents the monetary amount of Available-for-sale Securities, Estimated Fair Value, as of the indicated date.

No definition available.

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

+ Details

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- Definition

Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

+ Details

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- Details

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- Details

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