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Retirement Plan
 12 Months Ended
Dec. 31, 2020
Retirement Benefits [Abstract]  
Retirement Plan
13. Retirement Plan
The Company has established a defined-contribution plan under Section 401(k) of the Internal Revenue Code (the “401(k) Plan”). The 401(k) Plan covers all employees who meet defined minimum age and service
requirements, and
allows
participants to defer a portion of their annual compensation on a
pre-tax
basis. As currently established, the Company is not required to make any contributions to the 401(k) Plan. The Company contributed $0.7 million and $0.5 million during the years ended December 31, 2020 and 2019, respectively.​​​​​​​