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Long-term Equity-based Compensation - Schedule of Outstanding Options (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares Subject to Awards | 1,434,273 | 1,012,279
Weighted- average Exercise Price Per Share ($) | $ 46.48 | $ 37.45
Weighted- average Remaining Contractual Life (in Years) | 7 years 10 months 9 days |
Range of Exercise Prices $15.00 - $20.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | $ 10.01 |
Range of Exercise Prices, Upper Range Limit | $ 20.00 |
Shares Subject to Awards | 4,000 |
Weighted- average Exercise Price Per Share ($) | $ 16.48 |
Weighted- average Remaining Contractual Life (in Years) | 4 months 5 days |
Shares Subject to Awards | 4,000 |
Weighted- average Exercise Price Per Share ($) | $ 16.48 |
Range of Exercise Prices $20.01 - $25.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | 20.01 |
Range of Exercise Prices, Upper Range Limit | $ 30.00 |
Shares Subject to Awards | 187,410 |
Weighted- average Exercise Price Per Share ($) | $ 27.77 |
Weighted- average Remaining Contractual Life (in Years) | 6 years 2 months 20 days |
Shares Subject to Awards | 140,206 |
Weighted- average Exercise Price Per Share ($) | $ 27.79 |
Range of Exercise Prices $25.01 - $30.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | 30.01 |
Range of Exercise Prices, Upper Range Limit | $ 40.00 |
Shares Subject to Awards | 249,202 |
Weighted- average Exercise Price Per Share ($) | $ 34.89 |
Weighted- average Remaining Contractual Life (in Years) | 6 years 6 months 2 days |
Shares Subject to Awards | 206,760 |
Weighted- average Exercise Price Per Share ($) | $ 34.76 |
Range of Exercise Prices $30.01 - $35.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | 40.01 |
Range of Exercise Prices, Upper Range Limit | $ 50.00 |
Shares Subject to Awards | 431,888 |
Weighted- average Exercise Price Per Share ($) | $ 42.57 |
Weighted- average Remaining Contractual Life (in Years) | 7 years 9 months 22 days |
Shares Subject to Awards | 231,473 |
Weighted- average Exercise Price Per Share ($) | $ 42.34 |
Range of Exercise Prices $35.01 - $40.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | 50.01 |
Range of Exercise Prices, Upper Range Limit | $ 60.00 |
Shares Subject to Awards | 489,797 |
Weighted- average Exercise Price Per Share ($) | $ 59.90 |
Weighted- average Remaining Contractual Life (in Years) | 9 years 1 month |
Shares Subject to Awards | 244 |
Weighted- average Exercise Price Per Share ($) | $ 54.50 |
Range of Exercise Prices $40.01 - $45.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | 60.01 |
Range of Exercise Prices, Upper Range Limit | $ 70.00 |
Shares Subject to Awards | 58,875 |
Weighted- average Exercise Price Per Share ($) | $ 67.09 |
Weighted- average Remaining Contractual Life (in Years) | 9 years 1 month 22 days |
Shares Subject to Awards | 3,917 |
Weighted- average Exercise Price Per Share ($) | $ 66.35 |
Range of Exercise Prices $45.01 - $50.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | 70.01 |
Range of Exercise Prices, Upper Range Limit | $ 80.00 |
Shares Subject to Awards | 10,310 |
Weighted- average Exercise Price Per Share ($) | $ 77.76 |
Weighted- average Remaining Contractual Life (in Years) | 9 years 5 months 25 days |
Shares Subject to Awards | 0 |
Weighted- average Exercise Price Per Share ($) | $ 0.00 |
Range of Exercise Prices $50.01 - $55.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | 80.01 |
Range of Exercise Prices, Upper Range Limit | $ 90.00 |
Shares Subject to Awards | 2,791 |
Weighted- average Exercise Price Per Share ($) | $ 82.10 |
Weighted- average Remaining Contractual Life (in Years) | 9 years 8 months 4 days |
Shares Subject to Awards | 0 |
Weighted- average Exercise Price Per Share ($) | $ 0.00 |
Range of Exercise Prices $15.00 - $70.00 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, Lower Range Limit | $ 10.01 |
Shares Subject to Awards | 1,434,273 |
Weighted- average Exercise Price Per Share ($) | $ 46.48 |
Weighted- average Remaining Contractual Life (in Years) | 7 years 10 months 9 days |
Shares Subject to Awards | 586,600 |
Weighted- average Exercise Price Per Share ($) | $ 36.18 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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=109197908&loc=d3e5070-113901 + Details
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