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Note 21: Stock Compensation Plans: Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
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Granted from 2013 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | (1,000) | (157,800) | (131,000)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | 1,000 | 157,800 | 131,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 52.500 | $ 52.118 | $ 41.228
Exercised |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 0 | 0 | 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | (81,940) | (119,692) | (81,812)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 27.597 | $ 27.352 | $ 26.472
Forfeited from terminated plan(s) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |  | 0 | 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options |  | (675) | (2,692)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price |  | $ 24.690 | $ 22.654
Forfeited from current plan(s) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 600 | 15,837 | 19,025
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | (600) | (15,837) | (19,025)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 55.000 | $ 41.916 | $ 39.123
Forfeited from 2013 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 13,773 |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | (13,773) |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 45.692 |  |
Termination of 2013 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | (90,285) |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | 0 |  |
Available to grant from 2018 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 800,000 |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | 0 |  |
Granted from 2018 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | (185,750) |  |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | 185,750 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 55.297 |  |
Employee Stock Option | Balance, Beginning of Period |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |  |  | 331,450
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options |  |  | 633,732
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price |  |  | $ 31.297
Employee Stock Option | Balance, End of Period |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 614,850 | 77,512 | 219,475
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | 773,236 | 682,799 | 661,203
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 43.886 | $ 38.860 | $ 33.672

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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