Note 15 - Stock Based Compensation (Details) - Stock Option Activity (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Option Activity [Abstract]
Outstanding, beginning of year (in Shares)	1,215,530	964,530	839,417
Outstanding, beginning of year	$ 3.66	$ 4.38	$ 6.04
Granted (in Shares)	360,900	347,250	296,750
Granted	$ 3.69	$ 2.72	$ 1.95
Exercised (in Shares)	(500)
Exercised	$ 1.95
Forfeited (in Shares)	(81,531)	(96,250)	(171,637)
Forfeited	$ 5.15	$ 7.39	$ 8.32
Outstanding, end of year (in Shares)	1,494,399	1,215,530	964,530
Outstanding, end of year	$ 3.59	$ 3.66	$ 4.38
Options exercisable at year-end (in Shares)	454,761	306,217	253,930
Options exercisable at year-end	$ 5.06	$ 6.24	$ 7.92
Weighted average fair value of options granted during the year	$ 2.07	$ 1.51	$ 1.05

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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.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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

-Publisher FASB

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Gross number of share options (or share units) granted during the period.

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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 price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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