Note 12 - Stock Based Compensation and Other Benefit Plans (Details) - Stock Appreciation Rights Activity (Stock Appreciation Rights (SARs) [Member])	12 Months Ended
Dec. 31, 2014
Stock Appreciation Rights (SARs) [Member]
Note 12 - Stock Based Compensation and Other Benefit Plans (Details) - Stock Appreciation Rights Activity [Line Items]
Balance outstanding	134,833
Exercisable at end of period	107,133
Exercised	(26,200)
Expired or cancelled	(1,500)
Balance outstanding	107,133

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Represents share based compensation arrangement by share based payment award, non-option equity instruments,exercisable, number.

+ References

No definition available.

+ Details

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- Definition

Number of non-option equity instruments exercised by participants.

+ References

+ Details

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- Definition

Number of shares under non-option equity instrument agreements that were either cancelled or expired.

+ References

+ Details

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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