Note 4 - Fair Value Measurements (Details) - Investments Measured at Fair Value (USD $)	3 Months Ended
Dec. 31, 2014
Level 2:
Short-term Securities	$ 626,044us-gaap_MarketableSecuritiesCurrent
Long-term Securites	2,498,147us-gaap_MarketableSecuritiesNoncurrent
Fair Value, Inputs, Level 1 [Member] \| Money Market Funds [Member] \| Fair Value, Measurements, Nonrecurring [Member]
Level 1:
Money Market Funds	195,114
Level 2:
Cash and Cash Equivalents	195,114
Fair Value, Inputs, Level 2 [Member] \| Certificates of Deposit [Member] \| Fair Value, Measurements, Nonrecurring [Member]
Level 1:
Money Market Funds	250,000
Level 2:
Cost Basis	2,998,147
Fair Value	2,998,147
Cash and Cash Equivalents	250,000
Short-term Securities	250,000
Long-term Securites	2,498,147
Fair Value, Inputs, Level 2 [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Measurements, Nonrecurring [Member]
Level 1:
Money Market Funds	1,402,654
Level 2:
Cost Basis	1,777,908
Unrealized Gain/(Losses)	790
Fair Value	1,778,698
Cash and Cash Equivalents	1,402,654
Short-term Securities	376,044
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Nonrecurring [Member]
Level 1:
Money Market Funds	1,652,654
Level 2:
Cost Basis	4,776,055
Unrealized Gain/(Losses)	790
Fair Value	4,776,845
Cash and Cash Equivalents	1,652,654
Short-term Securities	626,044
Long-term Securites	2,498,147
Fair Value, Measurements, Nonrecurring [Member]
Level 1:
Money Market Funds	1,847,768
Level 2:
Cost Basis	4,971,169
Unrealized Gain/(Losses)	790
Fair Value	4,971,959
Cash and Cash Equivalents	1,847,768
Short-term Securities	626,044
Long-term Securites	$ 2,498,147

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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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

+ Details

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- Definition

Amount of unrealized gain (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 9

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

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- Definition

Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

+ 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 2

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

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- Definition

Total debt and equity financial instruments including: (1) securities held-to-maturity and (2) securities available-for-sale that will be held for the long-term.

+ References

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