Note 3 - Short Term Investments Available For Sale (Detail) (USD $)	1 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2009
Short-term Investments	$ 8,037,620	$ 10,157,160
Available-for-sale Securities, Equity Securities			108,000
Available-for-sale Securities, Fair Value Disclosure			903,112
Available-for-sale Securities, Gross Unrealized Losses			0
Proceeds from Sale of Available-for-sale Securities	138,000
Available-for-sale Securities, Gross Realized Gains	30,000
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax	108,000
Short Term Investments Available for Sale (Member)
Short-term Investments	$ 8,037,620	$ 10,157,160

Amount of equity securities categorized neither as held-to-maturity nor as trading.

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+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References+ Details

- Definition

Before tax amount of the income statement impact of the reclassification adjustment for unrealized gain (loss) realized upon the sale of available-for-sale securities.

+ References

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+ Details

- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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