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401(k) Plan | 12 Months Ended
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Dec. 31, 2023
Retirement Benefits [Abstract] |
401(k) Plan | 7. 401(k) Plan Effective January 1997, the Company established a deferred compensation plan (the 401(k) Plan) pursuant to Section 401(k) of the Internal Revenue Code of 1986, as amended (the Code), whereby substantially all employees are eligible to contribute up to 60 percent of their pretax earnings, not to exceed amounts allowed under the Code. The Company makes discretionary contributions to the 401(k) Plan equal to 100 percent of each employee’s pretax contributions up to 5 percent of his or her eligible compensation, subject to limitations under the Code. The Company’s total contributions to the 401(k) Plan were $6.1 mil lion, $5.1 million, and $5.8 million for the years ended December 31, 2023, 2022, and 2021, respectively.

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