Note 13 - Stock Option Plans (Details) - Stock Options Exercisable (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercisable Options (in Shares)	250,000	194,167
Weighted-Average Exercise Price - Exercisable	$ 1.76	$ 1.83
Options Exercisable Exercise Price Range 1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range of Exercise Price - Exercisable	$ 0.69
Upper Range of Exercise Price - Exercisable	$ 2.08
Exercisable Options (in Shares)	226,000
Weighted-Average Contractual Life Remaining - Exercisable	6 years
Weighted-Average Exercise Price - Exercisable	$ 1.57
Aggregate Intrinsic Value - Exercisable (in Dollars)	$ 24,985
Options Exercisable Exercise Price Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range of Exercise Price - Exercisable	$ 3.30
Upper Range of Exercise Price - Exercisable	$ 3.84
Exercisable Options (in Shares)	24,000
Weighted-Average Contractual Life Remaining - Exercisable	2 years 328 days
Weighted-Average Exercise Price - Exercisable	$ 3.57
Options Exercisable Exercise Price Range 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range of Exercise Price - Exercisable	$ 0.69
Upper Range of Exercise Price - Exercisable	$ 3.84
Exercisable Options (in Shares)	250,000
Weighted-Average Contractual Life Remaining - Exercisable	5 years 255 days
Weighted-Average Exercise Price - Exercisable	$ 1.76
Aggregate Intrinsic Value - Exercisable (in Dollars)	$ 24,985

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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Section 50

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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.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

+ References

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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.

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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.

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