Employee Retirement Plans - Pension expense (Details) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2022
USD ($)
item
|
Dec. 31, 2021
USD ($)
|
Dec. 31, 2020
USD ($)
|
|
| Employee Retirement Plans | |||
| Number of regional multi-employer pension plans in which the entity participates | item | 56 | ||
| Defined contribution plans | $ 17,946 | $ 12,192 | $ 10,251 |
| Multi-employer plans | 12,788 | 12,308 | 11,754 |
| Total expense related to participation in retirement plans | $ 30,734 | $ 24,500 | $ 22,005 |
| X | ||||||||||
- Definition Amount of expense related to multiemployer retirement plans. No definition available.
|
| X | ||||||||||
- Definition Represents the number of regional multi-employer pension plans in which the entity participates. No definition available.
|
| X | ||||||||||
- Definition The amount of expense related to Company's participation in retirement plans. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of cost for defined contribution plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|