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Earnings Per Common Share And Share Awards Summary Of Share-Based Award Transactions (Details) (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Number Of Shares, Options exercised | (1,000) | (2,650) |
Share Based Compensation Arrangement By Share Based Payment Award, Options, Unvested, Number | 2,250 |  |
Share Based Compensation Arrangement By Share Based Payment Award, Options, Unvested, Weighted Average Exercise Price | $ 68.70 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |  |  |
Weighted Average Exercise Price, Options exercised | $ 27.21 | $ 28.63 |
StockOptionsAndStockAppreciationRightsSARS [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Number Of Shares, Outstanding Beginning Balance | 19,000 | 98,150 |
Number Of Shares, Options/SARs cancelled/forfeited/expired | 0 | 0 |
Number Of Shares, Outstanding Ending Balance | 21,000 | 19,000 | 98,150
Number Of Shares, Exercisable as of September 30, 2014 | 18,750 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |  |  |
Weighted Average Exercise Price, Outstanding Beginning Balance | $ 45.74 | $ 30.74 |
Weighted Average Exercise Price, Options/SARs cancelled/forfeited/expired | $ 0.00 | $ 0.00 |
Weighted Average Exercise Price, Outstanding Ending Balance | $ 51.30 | $ 45.74 | $ 30.74
Weighted Average Exercise Price, Exercisable as of September 30, 2014 | $ 49.22 |  |
Average Remaining Contractual Term, Outstanding Beginning Balance | 3 years 10 months 24 days | 3 years 5 months 4 days | 3 years 2 months 1 day
Average Remaining Contractual Term, Outstanding Ending Balance | 3 years 10 months 24 days | 3 years 5 months 4 days | 3 years 2 months 1 day
Average Remaining Contractual Term, Exercisable as of September 30, 2014 | 3 years 6 months 25 days |  |
Share Based Compensation Arrangement By Share Based Payment Award, Options, Unvested, Weighted Average Remaining Contractual Term | 6 years 7 months 20 days |  |
Aggregate Intrinsic Value, Outstanding Beginning Balance | $ 669,610 | $ 2,871,710 |
Aggregate Intrinsic Value, Outstanding Ending Balance | 459,810 | 669,610 | 2,871,710
Aggregate Intrinsic Value, Exercisable as of September 30, 2014 | 449,685 |  |
Share Based Compensation Arrangement By Share Based Payment Award, Options, Unvested, Intrinsic Value | $ 10,125 |  |
SARs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Number Of Shares, SARs granted | 4,500 | 3,000 |
Number Of Shares, Options exercised | (1,500) | (79,500) |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |  |  |
Weighted Average Exercise Price, SARs granted | $ 68.70 | $ 71.59 |
Weighted Average Exercise Price, Options exercised | $ 49.04 | $ 28.77 |

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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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