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401(k) Plan
12 Months Ended
Dec. 31, 2019
Retirement Benefits [Abstract]  
401(k) Plan 401(k) Plan
The Company has a qualified defined contribution plan under Section 401(k) of the Internal Revenue Code covering eligible employees. Substantially all of the U.S. employees are eligible to make contributions to the 401(k) plan. On July 1, 2017, the Company implemented a 401(k) employer match, based on the amount of the employees’ contributions subject to certain limitations. Employer contributions were $4.1 million, $2.9 million, and $1.1 million for the years ended December 31, 2019, 2018 and 2017.