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Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Retirement Benefits [Abstract] |  |  |
Deferral percentage of base salary (up to) | 80.00% |  |
Deferral percentage of other compensation (up to) | 100.00% |  |
Employee deferrals deemed vested percentage upon contribution | 100.00% |  |
Company's contributions to the plan | $ 4.8 | $ 3.2 | $ 2.5

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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