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Retirement Plans
 12 Months Ended
Dec. 31, 2020
Retirement Benefits [Abstract]  
Retirement Plans Retirement Plans We have a 401(k) retirement and savings plan made available to all employees. The 401(k) plan allows each participant to contribute up to an amount not to exceed an annual statutory maximum. We may, at our discretion, make matching contributions to the 401(k) plan. Cash contributions to the plan were $3.2 million, $2.5 million, and $1.6 million for the years ended December 31, 2020, 2019 and 2018, respectively.