Note 7 - Stock-Based Compensation and Other Plans (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Employee Stock Option [Member] \| The 2008 Plan [Member]
Note 7 - Stock-Based Compensation and Other Plans (Details) [Line Items]
Allocated Share-based Compensation Expense	$ 93,000	$ 132,500
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	35,500	50,400
Restricted Stock [Member]
Note 7 - Stock-Based Compensation and Other Plans (Details) [Line Items]
Allocated Share-based Compensation Expense	9,000	128,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	3,400	48,500
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	134,900
The 2008 Plan [Member]
Note 7 - Stock-Based Compensation and Other Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	1.3
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 825,900

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section S99

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-Subparagraph (SAB TOPIC 14.F)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Paragraph 2

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