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Equity Incentive Plan Details 1 (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 1,215,481 | 1,374,705
Options, Outstanding, Weighted Average Exercise Price | $ 192.63 | $ 162.29
Options, Outstanding, Weighted Average Remaining Contractual Term | 5 years 6 months 8 days |
Options, Exercisable, Number | 888,061 |
$0.0-$110.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 209,721 |
Options, Outstanding, Weighted Average Exercise Price | $ 87.36 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 2 years 6 months 27 days |
Options, Exercisable, Number | 209,721 |
$110.0-$135.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 220,815 |
Options, Outstanding, Weighted Average Exercise Price | $ 127.63 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 3 years 1 month 7 days |
Options, Exercisable, Number | 220,815 |
$135.0-$170.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 332,507 |
Options, Outstanding, Weighted Average Exercise Price | $ 159.62 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 5 years 3 months 30 days |
Options, Exercisable, Number | 300,382 |
$170.0-$250.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 131,135 |
Options, Outstanding, Weighted Average Exercise Price | $ 244.99 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 6 years 10 months 6 days |
Options, Exercisable, Number | 81,249 |
$250.0 and Greater Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 321,303 |
Options, Outstanding, Weighted Average Exercise Price | $ 318.83 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 8 years 9 months 3 days |
Options, Exercisable, Number | 75,894 |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef -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=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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