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401(k) plan | 12 Months Ended
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Dec. 31, 2021
Retirement Benefits [Abstract] |
401(k) plan | 17. 401(k) plan The Company maintains a 401(k) plan for its employees. Employee contributions are voluntary. The Company may match employee contributions in amounts to be determined at the Company’s sole discretion. The Company provided an 100%, 100% and 100% matching contribution for up to the first 6% of each contributing employee’s base salary contributions for the years ended December 31, 2021, 2020 and 2019, respectively. The Company made matching contributions to the 401(k) plan and recorded expense of approximately $6.6 million, $5.3 million, and $3.5 million for the years ended December 31, 2021, 2020 and 2019, respectively.

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- Definition The entire disclosure of an entity's employee compensation and benefit plans, excluding share-based compensation and including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 + Details
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