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Note 10 - Options: Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Tables) | 12 Months Ended
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Dec. 31, 2012
Tables/Schedules |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions |
|  | Years ended December 31,
|  | 2012 |  |  | 2011 |  |  | 2010
Expected dividend amount per quarter | $ | 0.2571 |  | $ | 0.2449 |  | $ | 0.2471
Expected stock price volatility |  | 22.8% |  |  | 22.8% |  |  | 22.0%
Risk-free interest rate |  | 0.54% |  |  | 1.19% |  |  | 2.08%
Expected life of options |  | 3.8 years |  |  | 3.6 years |  |  | 4.5 years

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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