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Employee Benefit Plan (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |  |  |
Company's contributions under 401(k) retirement savings plan | $ 8.7 | $ 8.2 | $ 7.7
Deferred Compensation Arrangement With Individual, Tranche Two |  |  |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |  |  |
Deferred compensation arrangement vesting percentage | 100.00% |  |
Deferred compensation arrangement, service period | 3 years |  |
Deferred Compensation Arrangement With Individual, Tranche One |  |  |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |  |  |
Deferred compensation arrangement vesting percentage | 50.00% |  |
Deferred Compensation Arrangement With Individual, Tranche One | Minimum |  |  |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |  |  |
Deferred compensation arrangement, service period | 2 years |  |
Deferred Compensation Arrangement With Individual, Tranche One | Maximum |  |  |
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] |  |  |
Deferred compensation arrangement, service period | 3 years |  |

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- Definition Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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