Retirement Plans

12 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Retirement Plans

Retirement Plans:

We have a trusteed, contributory retirement plan for most of our full-time employees. This plan permits employees to contribute specified percentages of their salary, matched up to a limit. Matching contributions, net of forfeitures, approximated $6.9 million, $5.7 million and $4.7 million for the years ended December 31, 2023, 2022 and 2021, respectively. We had trusteed, noncontributory retirement plans for most of our full-time employees prior to 2023. Contributions were discretionary and amounts accrued were approximately $4.8 million and $1.8 million for the years ended 2022 and 2021, respectively. We did not have a material trusteed, noncontributory retirement plan in 2023.

In addition, as of December 31, 2023, approximately 165 employees are covered by union-sponsored, multi-employer pension plans for which approximately $2.1 million, $2.1 million and $1.9 million were contributed for the years ended December 31, 2023, 2022 and 2021, respectively. A union representing approximately 15 employees decertified in 2023. The related withdrawal liability totaled $0.7 million.