Note 10 - Options: Schedule of Share-based Compensation, Stock Options, Activity (Details)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based compensation arrangement by share-based payment award, Options, Grants in period	13,000	67,200	7,700
Price Range Per Share Granted	33.30 - 33.30	26.52 - 26.75	28.06 - 28.06
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	19,393	24,612	5,243
Price Range Per Share Expired	24.00 - 28.13	24.00 - 31.33	17.71 - 31.33
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	82,386	21,220	27,230
Price Range Per Share Exercised	15.01 - 31.33	9.13 - 25.59	6.75 - 28.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	149,527	238,306	216,938
Price Range Per Share Outstanding	17.71 - 33.30	15.01 - 31.33	9.13 - 31.33
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	120,420	172,027	173,178
Price Range Per Share Total Exercisable	17.71 - 31.33	15.01 - 31.33	9.13 - 31.33

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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

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The decrease in the number of reserved shares that could potentially be issued attributable to the exercise or conversion during the reporting period of previously issued stock options under the option plan.

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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.

+ References

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

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-Name Accounting Standards Codification

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

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