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Earnings Per Common Share And Stock Options (Tables) | 12 Months Ended
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Dec. 31, 2012
Earnings Per Common Share And Stock Options [Abstract] |
Computation Of Basic And Diluted Earnings Per Share |
For the Years Ended December 31, |  | 2012 |  | 2011
Net income attributable to the Company | $ | 11,102,496 | $ | 6,933,936
Weighted average common shares outstanding - Basic |  | 2,081,703 |  | 2,151,350
Incremental shares outstanding assuming |  |  |  |
the exercise of dilutive stock options and SARs (share-settled) |  | 35,090 |  | 18,286
Weighted average common shares outstanding - Diluted |  | 2,116,793 |  | 2,169,636
Basic earnings per common share | $ | 5.33 | $ | 3.22
Diluted earnings per common share | $ | 5.24 | $ | 3.20
Summary Of Share-Based Award Transactions |
|  |  |  | Weighted | Average |  |
|  |  |  | Average | Remaining |  | Aggregate
| Number |  |  | Exercise | Contractual |  | Intrinsic
| of Shares |  |  | Price | Term (years) |  | Value
Outstanding as of January 1, 2011 | 110,800 |  | $ | 28.77 | 4.51 | $ | 353,955
SARs granted | 3,000 |  |  | 41.50 |  |  |
Options exercised | (7,700 | ) |  | 20.15 |  |  |
Options/SARs cancelled/forfeited/expired | (4,500 | ) |  | 28.61 |  |  |
Outstanding as of December 31, 2011 | 101,600 |  | $ | 29.81 | 3.91 | $ | 697,780
SARs granted | 3,000 |  |  | 50.50 |  |  |
Options exercised | (6,380 | ) |  | 25.17 |  |  |
Options/SARs cancelled/forfeited/expired | (70 | ) |  | 31.00 |  |  |
Outstanding as of December 31, 2012 | 98,150 |  | $ | 30.74 | 3.17 | $ | 2,871,710
Exercisable as of December 31, 2012 | 97,150 |  | $ | 30.59 | 3.15 | $ | 2,857,350
Unvested as of December 31, 2012 | 1,000 |  | $ | 45.64 | 5.20 | $ | 14,360
Summary Of Information Of Fixed Stock Options |
|  |  |  |  | Options Outstanding at Year-End |  | Options Exercisable at Year-End
|  |  |  |  |  | Weighted | Weighted |  |  | Weighted
|  |  |  |  |  | Average | Average |  |  | Average
|  |  |  |  | Number | Remaining | Exercise | Number |  | Exercise
| Range of Exercise Prices | Outstanding | Contractual Life | Price | Exercisable |  | Price
$ | 20.00 | - | $ | 27.96 | 2,400 | 0.76 | $ | 25.54 | 2,400 | $ | 25.54
| 27.98 | - |  | 31.99 | 750 | 1.07 |  | 31.20 | 500 |  | 31.27
| 33.32 | - |  | 36.79 | 2,000 | 2.38 |  | 36.79 | 2,000 |  | 36.79
$ | 10.00 | - | $ | 36.79 | 5,150 | 1.43 | $ | 30.73 | 4,900 | $ | 30.72
|  |  |  |  | SARs Outstanding at Year-End |  | SARs Exercisable at Year-End
|  |  |  |  |  | Weighted | Weighted |  |  | Weighted
|  |  |  |  |  | Average | Average |  |  | Average
|  |  |  |  | Number | Remaining | Exercise | Number |  | Exercise
| Range of Exercise Prices | Outstanding | Contractual Life | Price | Exercisable |  | Price
$ | 27.97 | - | $ | 27.97 | 75,000 | 3.17 | $ | 27.97 | 75,000 | $ | 27.97
| 32.00 | - |  | 32.00 | 2,500 | 3.39 |  | 32.00 | 2,500 |  | 32.00
| 33.31 | - |  | 33.31 | 3,000 | 4.38 |  | 33.31 | 3,000 |  | 33.31
| 36.80 | - |  | 58.59 | 12,500 | 3.58 |  | 46.51 | 11,750 |  | 46.25
$ | 27.97 | - | $ | 49.04 | 93,000 | 3.27 | $ | 30.74 | 92,250 | $ | 30.58
Weighted-Average Assumptions Of Fair Values For Stock Appreciation Rights |
| 2012 |  | 2011 |
Expected Life in Years | 5.0 |  | 5.0 |
Volatility | 44.6 | % | 43.6 | %
Interest Rate | 0.8 | % | 1.9 | %
Yield Rate | 0.6 | % | 0.8 | %
Schedule Of Weighted Average Grant Date Fair Value Of Stock Awards Plans |
For the Years Ended December 31, |  | 2012 |  | 2011
Exercise price equal to market price on date of grant: |  |  |  |
Weighted-average market price | $ | 50.50 | $ | 41.50
Weighted-average grant-date fair value | $ | 18.84 | $ | 15.55

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