Note 11 - Stockholders' Equity (Details) - Information About the Outstanding and Exercisable Options (USD $)	12 Months Ended
Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, number outstanding (in Shares)	187,730
Options exercisable, number exercisable (in Shares)	162,730
Range of $3.00 - 3.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, number outstanding (in Shares)	62,000
Options outstanding, weighted average remaining contractual	3 years 346 days
Options outstanding, weighted average exercise price	$ 3.65
Options outstanding, intrinsic value (in Dollars)	$ 675,180
Options exercisable, number exercisable (in Shares)	62,000
Options exercisable, weighted average exercise price	$ 3.65
Options exercisable, intrinsic value (in Dollars)	675,180
Range of $3.00 - 3.99 [Member] \| Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, lower range	$ 3.00
Range of $3.00 - 3.99 [Member] \| Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, upper range	$ 3.99
Range of $4.00 - 4.49 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, number outstanding (in Shares)	15,930
Options outstanding, weighted average remaining contractual	6 years 14 days
Options outstanding, weighted average exercise price	$ 4.25
Options outstanding, intrinsic value (in Dollars)	163,920
Options exercisable, number exercisable (in Shares)	15,930
Options exercisable, weighted average exercise price	$ 4.25
Options exercisable, intrinsic value (in Dollars)	163,920
Range of $4.00 - 4.49 [Member] \| Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, lower range	$ 4.00
Range of $4.00 - 4.49 [Member] \| Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, upper range	$ 4.49
Range of $4.50 - 4.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, number outstanding (in Shares)	100,000
Options outstanding, weighted average remaining contractual	3 years 284 days
Options outstanding, weighted average exercise price	$ 4.62
Options outstanding, intrinsic value (in Dollars)	992,000
Options exercisable, number exercisable (in Shares)	75,000
Options exercisable, weighted average exercise price	$ 4.62
Options exercisable, intrinsic value (in Dollars)	744,000
Range of $4.50 - 4.99 [Member] \| Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, lower range	$ 4.50
Range of $4.50 - 4.99 [Member] \| Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, upper range	$ 4.99
Range of $5.00 - 7.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, number outstanding (in Shares)	9,800
Options outstanding, weighted average remaining contractual	7 years 14 days
Options outstanding, weighted average exercise price	$ 7.90
Options outstanding, intrinsic value (in Dollars)	65,072
Options exercisable, number exercisable (in Shares)	9,800
Options exercisable, weighted average exercise price	$ 7.90
Options exercisable, intrinsic value (in Dollars)	$ 65,072
Range of $5.00 - 7.99 [Member] \| Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, lower range	$ 5.00
Range of $5.00 - 7.99 [Member] \| Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, upper range	$ 7.99

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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

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)(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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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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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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

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-Name Accounting Standards Codification

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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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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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

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-Publisher FASB

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