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Equity Incentive Plan Details 1 (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 1,374,705 | 1,646,483
Options, Outstanding, Weighted Average Exercise Price | $ 162.29 | $ 133.80
Options, Outstanding, Weighted Average Remaining Contractual Term | 5 years 6 months 7 days |
Options, Exercisable, Number | 1,000,773 |
$0.0-$50.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 294,206 |
Options, Outstanding, Weighted Average Exercise Price | $ 84.18 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 3 years 4 months 23 days |
Options, Exercisable, Number | 294,206 |
$50.0-$70.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 202,950 |
Options, Outstanding, Weighted Average Exercise Price | $ 109.00 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 1 year 11 months 5 days |
Options, Exercisable, Number | 202,950 |
$70.0-$100.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 340,650 |
Options, Outstanding, Weighted Average Exercise Price | $ 141.50 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 5 years 4 months 4 days |
Options, Exercisable, Number | 309,259 |
$100.0-$125.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 173,273 |
Options, Outstanding, Weighted Average Exercise Price | $ 169.37 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 6 years 10 months |
Options, Exercisable, Number | 109,023 |
$125.0-$150.0 Range of Exercise Price |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Options, Outstanding, Number | 363,626 |
Options, Outstanding, Weighted Average Exercise Price | $ 271.34 |
Options, Outstanding, Weighted Average Remaining Contractual Term | 8 years 9 months 12 days |
Options, Exercisable, Number | 85,335 |

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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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