Note 13 - Stock-Based Compensation (Details) - Information about the Company’s Outstanding Options and Exercisable Options (USD $)	3 Months Ended
Mar. 31, 2015
Note 13 - Stock-Based Compensation (Details) - Information about the Company’s Outstanding Options and Exercisable Options [Line Items]
Outstanding Shares (in Shares)	175,250
Outstanding Life	5 years 332 days
Outstanding Price	$ 10.87
Exercisable Shares (in Shares)	110,150
Exercisable Price	$ 13.37
Range A [Member]
Note 13 - Stock-Based Compensation (Details) - Information about the Company’s Outstanding Options and Exercisable Options [Line Items]
Range of Exercise Price - Lower Limit	$ 4.00
Range of Exercise Price - Upper Limit	$ 10.00
Outstanding Shares (in Shares)	106,500
Outstanding Life	7 years 226 days
Outstanding Price	$ 6.22
Exercisable Shares (in Shares)	41,400
Exercisable Price	$ 5.54
Range B [Member].
Note 13 - Stock-Based Compensation (Details) - Information about the Company’s Outstanding Options and Exercisable Options [Line Items]
Range of Exercise Price - Lower Limit	$ 10.01
Range of Exercise Price - Upper Limit	$ 17.00
Outstanding Shares (in Shares)	27,000
Outstanding Life	4 years 164 days
Outstanding Price	$ 11.01
Exercisable Shares (in Shares)	27,000
Exercisable Price	$ 11.01
Range C [Member]
Note 13 - Stock-Based Compensation (Details) - Information about the Company’s Outstanding Options and Exercisable Options [Line Items]
Range of Exercise Price - Lower Limit	$ 17.01
Range of Exercise Price - Upper Limit	$ 26.00
Outstanding Shares (in Shares)	32,250
Outstanding Life	2 years 288 days
Outstanding Price	$ 21.03
Exercisable Shares (in Shares)	32,250
Exercisable Price	$ 21.03
Range D [Member]
Note 13 - Stock-Based Compensation (Details) - Information about the Company’s Outstanding Options and Exercisable Options [Line Items]
Range of Exercise Price - Lower Limit	$ 26.01
Range of Exercise Price - Upper Limit	$ 34.00
Outstanding Shares (in Shares)	9,500
Outstanding Life	1 year 160 days
Outstanding Price	$ 28.14
Exercisable Shares (in Shares)	9,500
Exercisable Price	$ 28.14

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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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 floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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