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Note 10 - Stockholders' Equity (Details) - Options outstanding under the Company’s stock option plans (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Note 10 - Stockholders' Equity (Details) - Options outstanding under the Company’s stock option plans [Line Items]
Number Outstanding (in Shares)	2,564,130	1,964,130
Weighted Average Remaining Contractual Life (years)	1 year 324 days	2 years 54 days
Weighted Average Exercise Price	$ 2.62	$ 2.70
Number Exercisable (in Shares)	2,042,753
Weighted Average Exercise Price	$ 2.65
Price Range 1 [Member]
Note 10 - Stockholders' Equity (Details) - Options outstanding under the Company’s stock option plans [Line Items]
Range of Exercise Price, Upper	$ 1.50
Number Outstanding (in Shares)	452,500
Weighted Average Remaining Contractual Life (years)	1 year 146 days
Weighted Average Exercise Price	$ 1.50
Number Exercisable (in Shares)	452,500
Weighted Average Exercise Price	$ 1.50
Price Range 2 [Member]
Note 10 - Stockholders' Equity (Details) - Options outstanding under the Company’s stock option plans [Line Items]
Range of Exercise Price, Upper	$ 2.35
Number Outstanding (in Shares)	600,000
Weighted Average Remaining Contractual Life (years)	3 years 6 months
Weighted Average Exercise Price	$ 235
Number Exercisable (in Shares)	150,000
Weighted Average Exercise Price	$ 235
Price Range 3 [Member]
Note 10 - Stockholders' Equity (Details) - Options outstanding under the Company’s stock option plans [Line Items]
Range of Exercise Price, Lower	$ 3.00
Range of Exercise Price, Upper	$ 3.60
Number Outstanding (in Shares)	1,511,630
Weighted Average Remaining Contractual Life (years)	1 year 156 days
Weighted Average Exercise Price	$ 3.06
Number Exercisable (in Shares)	1,440,253
Weighted Average Exercise Price	$ 3.04

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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-Section 50

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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