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Earnings Per Common Share and Share Awards (Tables) | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Computation Of Basic And Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share for the years ended December 31:
(in thousands, except per share amounts) | 2018 |  | 2017 |  | 2016
Net income attributable to the Company | $ | 21,892 |  |  | $ | 25,707 |  |  | $ | 19,523 |
Weighted average common shares outstanding – Basic | 1,887 |  |  | 1,886 |  |  | 1,908 |
Incremental shares outstanding assuming the exercise of dilutive stock options and SARs (share-settled) | 10 |  |  | 10 |  |  | 7 |
Weighted average common shares outstanding – Diluted | 1,897 |  |  | 1,896 |  |  | 1,915 |
Basic earnings per common share | $ | 11.60 |  |  | $ | 13.63 |  |  | $ | 10.23 |
Diluted earnings per common share | $ | 11.54 |  |  | $ | 13.56 |  |  | $ | 10.19 |
Summary Of Share-Based Award Transactions | A summary of share-based award transactions for all share-based award plans follows:
(in thousands, except weighted average exercise price and average remaining contractual term) | Number Of Shares |  | Weighted Average Exercise Price |  | Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value
Outstanding as of January 1, 2016 | 22 |  |  | $ | 57.04 |  |  | 3.93 |  | $ | 945 |
SARs granted | 5 |  |  | 93.87 |  |  |  |  |  |
SARs exercised | (2 | ) |  | 32.00 |  |  |  |  |  |
Outstanding as of December 31, 2016 | 25 |  |  | $ | 65.85 |  |  | 3.85 |  | $ | 837 |
SARs granted | 4 |  |  | 192.71 |  |  |  |  |  |
SARs exercised | (4 | ) |  | 36.38 |  |  |  |  |
Outstanding as of December 31, 2017 | 25 |  |  | $ | 93.40 |  |  | 3.98 |  | $ | 2,624 |
SARs granted | 4 |  |  | 188.71 |  |  |  |  |  |
SARs exercised | (1 | ) |  | 41.50 |  |  |  |  |  |
Outstanding as of December 31, 2018 | 28 |  |  | $ | 110.27 |  |  | 3.64 |  | $ | 2,019 |
Exercisable as of December 31, 2018 | 27 |  |  | $ | 107.05 |  |  | 3.53 |  | $ | 2,019 |
Unvested as of December 31, 2018 | 1 |  |  | $ | 188.71 |  |  | 6.38 |  | $ | — |
Summary of Information of Fixed Stock Options | The following table summarizes information about SARs outstanding at December 31, 2018:
(in thousands, except exercise prices and average remaining contractual term) |  | SARs Outstanding at Year-End |  | SARs Exercisable at Year-End
Range of Exercise Prices |  | Number Outstanding |  | Weighted Average Remaining Contractual Life |  | Weighted Average Exercise Price |  | Number Exercisable |  | Weighted Average Exercise Price
$ | 50.00 |  |  | — |  | $ | 59.99 |  |  | 3 |  |  | 0.37 |  | $ | 50.50 |  |  | 3 |  |  | $ | 50.50 |
60.00 |  |  | — |  | 69.99 |  |  | 4 |  |  | 2.39 |  | 68.70 |  |  | 4 |  |  | 68.70 |
70.00 |  |  | — |  | 79.99 |  |  | 8 |  |  | 2.58 |  | 72.44 |  |  | 8 |  |  | 72.44 |
90.00 |  |  | — |  | 99.99 |  |  | 4 |  |  | 4.38 |  | 93.87 |  |  | 4 |  |  | 93.87 |
150.00 |  |  | — |  | 199.99 |  |  | 9 |  |  | 5.88 |  | 190.71 |  |  | 8 |  |  | 191.00 |
$ | 50.00 |  |  | — |  | $ | 199.99 |  |  | 28 |  |  | 3.64 |  | $ | 110.27 |  |  | 27 |  |  | $ | 107.05 |
Share-Based Valuation Assumptions | The weighted average fair values for the SARs issued during 2018, 2017 and 2016 were $78.61, $55.40 and $28.75, respectively, and were estimated using the weighted average assumptions shown in the table below.
| 2018 |  | 2017 |  | 2016
Expected life in years | 7.0 |  | 7.0 |  | 7.0
Volatility | 39.0% |  | 26.2% |  | 28.9%
Interest rate | 3.1% |  | 2.0% |  | 1.7%
Yield rate | 0.8% |  | 0.8% |  | 0.7%
Schedule of Weighted Average Grant Date Fair Value of Stock Awards Plans | The estimated weighted average grant-date fair value of SARs granted for the years ended December 31, was as follows:
| 2018 |  | 2017 |  | 2016
Exercise price equal to market price on date of grant: |  |  |  |  |
Weighted average market price | $ | 188.71 |  |  | $ | 192.71 |  |  | $ | 93.87 |
Weighted average grant-date fair value | $ | 78.61 |  |  | $ | 55.40 |  |  | $ | 28.75 |

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: 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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