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Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 31, 2019
Postemployment Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plan A 401(k) plan is available to all of our employees after meeting certain requirements. The plan permits employees to make contributions up to 90% of their salary, up to statutory limits, which was $19,000 in 2019, $18,500 in 2018 and $18,000 in 2017. We match 100% of participants basic contribution up to 6% of eligible compensation. Employees may participate in the plans immediately and certain employees are not eligible for matching contributions until after a 90-day waiting period. Aggregate matching contributions made by us were $4.7 million, $4.6 million and $4.0 million during the years ended December 31, 2019, 2018 and 2017.