Note 8 - Summary of Investments (Details) (USD $)	Mar. 31, 2015	Sep. 30, 2014
Marketable securities
Common stocks	$ 172,865,000us-gaap_AvailableForSaleSecurities	$ 173,676,000us-gaap_AvailableForSaleSecurities
Common stocks	54,917,000	47,976,000
Common stocks	117,948,000	125,700,000
Equity Securities [Member]
Marketable securities
Common stocks	164,589,000	165,734,000
Common stocks	49,980,000	43,042,000
Common stocks	114,609,000	122,692,000
Debt Securities [Member]
Marketable securities
Common stocks	8,276,000	7,942,000
Common stocks	4,937,000	4,934,000
Common stocks	$ 3,339,000	$ 3,008,000

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 25

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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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)

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