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Retirement Plan
 12 Months Ended
Dec. 31, 2020
Retirement Benefits [Abstract]  
Retirement Plan Retirement PlanWe have a 401(k) defined contribution savings plan, or the 401(k) Plan. The 401(k) Plan is for the benefit of all qualifying employees and permits voluntary contributions by employees up to 60% of base salary limited by the IRS-imposed maximum. Employer contributions were $6.7 million, $4.9 million, and $1.8 million for 2020, 2019 and 2018, respectively.