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Note 21: Stock Option Plan: Schedule of Fair Value Option Pricing Model Assumptions (Tables) | 12 Months Ended
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Dec. 31, 2014
Tables/Schedules |
Schedule of Fair Value Option Pricing Model Assumptions | The fair value of each option award is estimated on the date of the grant using the Black-Scholes option pricing model with the following assumptions:
| December 31, | December 31, | December 31,
| 2014 | 2013 | 2012
Expected dividends per share | $0.80 | $0.72 | $0.72
Risk-free interest rate | 1.40% | 1.53% | 0.65%
Expected life of options | 5 years | 5 years | 5 years
Expected volatility | 18.95% | 24.80% | 28.83%
Weighted average fair value of |  |  |
options granted during year | $4.20 | $5.22 | $4.55

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