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Stock Compensation Plans - Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 86,672 | 245,350 | 436,900 | 614,850
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | 1,033,303 | 971,107 | 807,868 | 773,236
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 50.528 | $ 48.079 | $ 49.139 | $ 43.886
Exercised |  |  |  |
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | 91,285 | 21,436 | 125,894 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 40.532 | $ 33.805 | $ 33.031 |
Forfeited from terminated plan(s) |  |  |  |
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | 5,197 | 6,875 | 17,424 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 44.563 | $ 38.849 | $ 44.163 |
Forfeited from current plan(s) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 44,022 | 4,800 | 8,450 |
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | 44,022 | 4,800 | 8,450 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 52.256 | $ 57.513 | $ 55.000 |
Granted from 2018 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 202,700 | 196,350 | 186,400 |
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | 202,700 | 196,350 | 186,400 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 57.980 | $ 41.740 | $ 60.086 |

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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=120381028&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=120381028&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=120381028&loc=d3e5070-113901 + Details
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