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Note 10 - Retirement Plan (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 35,567us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount	$ 43,132us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount	$ 50,500us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount

X

- Details

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X

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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