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Employee Benefits | 12 Months Ended
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Dec. 31, 2022
Employee Benefits [Abstract] |
Employee Benefits | 15. Employee Benefits Defined Contribution Plans We maintain various defined contribution plans, which include profit sharing, and provide retirement benefits for substantially all of our employees. Matching obligations, in connection with the plans which are funded in cash and typically contributed to the plans in March of the following year, are as follows (in thousands):
|  | U.S. Defined Contribution |
Year ended December 31, |  |  |
2022 |  | $ | 9,816 |
2021 |  |  | 9,763 |
2020 |  |  | 9,457 |
We maintain a defined contribution Supplemental Executive Retirement Plan for key employees. Under the plan, these employees may elect to defer a portion of their compensation and, in addition, we may at our discretion make contributions to the plan on behalf of the employees. In March 2022 and 2021, contributions of $0.8 million and $0.5 million were made related to calendar year 2021 and 2020, respectively. As of December 31, 2022, we have recorded an obligation of $0.8 million for 2022. We also have an Employee Stock Ownership Plan and Trust (“ESOP”) for employees who are not covered by a collective bargaining agreement. In connection therewith, we maintain an employee benefits trust to which we contribute shares of treasury stock. We are authorized to instruct the trustees to distribute such shares toward the satisfaction of our future obligations under the plan. The shares held in trust are not considered outstanding for purposes of calculating earnings per share until they are committed to be released. The trustees will vote the shares in accordance with its fiduciary duties. During 2022, we contributed to the trust an additional 48,200 shares from our treasury and released 48,200 shares from the trust leaving 200 shares remaining in the trust as of December 31, 2022. The provision for expense in connection with the ESOP was approximately $2.3 million in 2022, $2.5 million in 2021 and $2.3 million in 2020. Defined Benefit Pension Plan We maintain a defined benefit unfunded Supplemental Executive Retirement Plan (“SERP”). The SERP, as amended, is a defined benefit plan pursuant to which we will pay supplemental pension benefits to certain key employees upon the attainment of a contractual participant’s payment date based upon the employees’ years of service and compensation. As there are no current participants in the SERP, there was no benefit obligation outstanding related to the plan as of December 31, 2022 and 2021 and we recorded no expense related to the plan during the years ended December 31, 2022, 2021 and 2020. Postretirement Medical Benefits We provide certain medical and dental care benefits to 13 former U.S. union employees. The postretirement medical and dental benefit obligation for the former union employees as of December 31, 2022, and the net periodic benefit cost for our postretirement benefit plans for the years ended December 31, 2022, 2021 and 2020 were not material.

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