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Equity Incentive Plans (Tables) | 9 Months Ended
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Sep. 30, 2016
Share-based Compensation [Abstract] |
Summary Of Share Option Activity | A summary of the Company’s share option activity and related information is as follows:
| Number of options |  | Option price per share |  | Weighted avg. exercise price
Outstanding at December 31, 2015 | 516,305 |  |  | $ | 19.02 |  |  | — |  |  | $ | 65.50 |  |  | $ | 48.42 |
Exercised | (128,027 | ) |  | 19.41 |  |  | — |  |  | 65.50 |  |  | 38.13 |
Outstanding at September 30, 2016 | 388,278 |  |  | $ | 19.02 |  |  | — |  |  | $ | 65.50 |  |  | $ | 51.81 |
Summary Of Outstanding Options | The following table summarizes outstanding options at September 30, 2016:
Exercise price range |  | Options outstanding |  | Weighted avg. life remaining |  | Weighted avg. exercise price |  | Aggregate intrinsic value (in thousands)
$ 19.02 - 19.99 |  | 11,097 |  |  | 2.6 |  |  |  |  |
20.00 - 29.99 |  | — |  |  | — |  |  |  |  |
30.00 - 39.99 |  | 1,428 |  |  | 3.3 |  |  |  |  |
40.00 - 49.99 |  | 160,251 |  |  | 4.5 |  |  |  |  |
50.00 - 59.99 |  | 100,820 |  |  | 6.9 |  |  |  |  |
60.00 - 65.50 |  | 114,682 |  |  | 6.4 |  |  |  |  |
|  | 388,278 |  |  | 5.7 |  |  | $ | 51.81 |  |  | $ | 10,457 |
Summary Of Exercisable Options | The following table summarizes exercisable options at September 30, 2016:
Exercise price range |  | Options outstanding |  | Weighted avg. life remaining |  | Weighted avg. exercise price |  | Aggregate intrinsic value (in thousands)
$ 19.02 - 19.99 |  | 11,097 |  |  | 2.6 |  |  |  |  |
20.00 - 29.99 |  | — |  |  | — |  |  |  |  |
30.00 - 39.99 |  | 1,428 |  |  | 3.3 |  |  |  |  |
40.00 - 49.99 |  | 145,971 |  |  | 4.3 |  |  |  |  |
50.00 - 59.99 |  | 48,679 |  |  | 6.6 |  |  |  |  |
60.00 - 65.50 |  | 48,697 |  |  | 3.8 |  |  |  |  |
|  | 255,872 |  |  | 4.6 |  |  | $ | 49.48 |  |  | $ | 7,486 |
Summary Of Nonvested Share Activity | A summary of the Company’s nonvested share activity and related information is as follows:
| Number of shares |  | Weighted avg. grant date fair value |  | Weighted avg. life remaining
Outstanding at December 31, 2015 | 390,441 |  |  | $ | 54.84 |  |  |
Granted | 300,752 |  |  | 61.53 |  |  |
Vested | (156,876 | ) |  | 52.74 |  |  |
Forfeited | — |  |  | — |  |  |
Outstanding at September 30, 2016 | 534,317 |  |  | $ | 59.22 |  |  | 1.27
Summary Of Restricted Share Unit Activity | A summary of the Company’s restricted share unit activity and related information is as follows:
| Number of shares |  | Weighted avg. grant date fair value |  | Weighted avg. life remaining
Outstanding at December 31, 2015 | 18,036 |  |  | $ | 57.57 |  |  |
Granted | 15,805 |  |  | 70.93 |  |  |
Vested | (18,036 | ) |  | 57.57 |  |  |
Outstanding at September 30, 2016 | 15,805 |  |  | $ | 70.93 |  |  | 0.61

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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