Note 13 - Stock-Based Compensation (Details) - A Summary of Option Activity Under the Plan (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 13 - Stock-Based Compensation (Details) - A Summary of Option Activity Under the Plan [Line Items]
Outstanding (in Dollars)	195,900	257,090
Granted	14,000	18,000
Granted	14,000	18,000
Vested and Exercisable (in Dollars)	103,072	84,190
Shares Available [Member]
Note 13 - Stock-Based Compensation (Details) - A Summary of Option Activity Under the Plan [Line Items]
Outstanding	175,250	174,250	160,375	169,500
Outstanding	175,250	174,250	160,375	169,500
Granted	14,000	18,000
Granted	14,000	18,000
Forfeited	(750)	(2,250)
Expired	(7,500)	(1,875)
Expired	7,500	1,875
Vested and Exercisable	110,150	106,750
Options Outstanding [Member]
Note 13 - Stock-Based Compensation (Details) - A Summary of Option Activity Under the Plan [Line Items]
Outstanding	10.87	11.46	11.84	11.38
Outstanding	10.87	11.46	11.84	11.38
Granted	8.01	8.36
Granted	8.01	8.36
Forfeited	6.52	6.52
Expired	(17.47)	(19.88)
Expired	17.47	19.88
Vested and Exercisable (in Dollars per share)	13.37	14.83

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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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.

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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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.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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