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Note 21: Stock Compensation Plans: Schedule of Nonvested Share Activity (Details) - Employee Stock Option | 12 Months Ended
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Dec. 31, 2017 $ / shares shares
Nonvested Options | Beginning of Period |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares | 413,283
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Exercise Price | $ 39.253
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Grant Date Fair Value | $ 6.631
Nonvested Options | End of Period |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares | 441,937
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Exercise Price | $ 44.842
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Grant Date Fair Value | $ 7.981
Granted |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares | 157,800
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Exercise Price | $ 52.118
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Grant Date Fair Value | $ 10.041
Vested This Period |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares | (112,659)
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Exercise Price | $ 35.056
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Grant Date Fair Value | $ 6.022
Nonvested Options Forfeited |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares | (16,487)
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Exercise Price | $ 41.242
Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Grant Date Fair Value | $ 7.229

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- Definition Represents the per-share monetary value of Share Based Compensation Arrangement by Share Based Payment Award Nonvested Weighted Average Grant Date Fair Value, during the indicated time period. + References No definition available. + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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