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401(k) Plan
3 Months Ended
Mar. 31, 2023
401(k) Plan [Abstract]  
401(k) Plan 9.    401(k) Plan

The Company has a qualified retirement plan under section 401(k) of the Internal Revenue Code, or the IRC, under which participants may contribute up to 90% of their eligible compensation, subject to maximum deferral limits specified by the IRC. The Company may make a discretionary matching contribution to the 401(k) plan and may make a discretionary employer contribution to each eligible employee each year. Effective January 2022, the Company matched employees' contributions to the 401(k) plan at 50% of the first 6% of compensation deferred to the 401(k) plan. The Company's matching contributions were $683,000 and $589,000 for the three months ended March 31, 2023 and 2022, respectively.