Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Schedule of individually significant multi-employer plans and in aggregate other plans

The following table summarizes plan information relating to the Company’s participation in multi-employer defined benefit pension plans, including company contributions for the last three years, the status under the Pension Protection Act of 2006, as amended by the Consolidated and Further Continuing Appropriations Act of 2015 (“PPA”) of the plans and whether the plans are subject to a funding improvement or rehabilitation plan, or contribution surcharges. The most recent zone status is for the plan’s year-end indicated in the table. The zone status is based on information that the Company received from the plan, as well as from publicly available information on the U.S. Department of Labor website. The PPA zone status for the plan year ended on December 31, 2023 has not been listed because Forms 5500 were not yet available. Among other factors, plans in the red “critical” zone are generally less than 65 percent funded, plans in the yellow “endangered” zone are between 65 and 80 percent funded, and plans in the green zone are at least 80 percent funded. Also listed in the table below are the Company’s contributions to defined contribution plans. Information in the table has been presented separately for individually significant plans and in the aggregate for all other plans.

Pension Fund	EIN/Pension Plan Number	Pension Protection Act Zone Status				Contributions to Plan for the Year ended December 31,						Funding Plan	Surcharge Imposed
		Status	Plan Year End	Status	Plan Year End	2023		2022		2021
						(in thousands)
Defined Benefit Plans:
Southern California IBEW-NECA Pension Trust Fund	95-6392774 001	Yellow	6/30/2022	Yellow	6/30/2021	$	51,136	$	40,810	$	39,529	Yes	No
Eighth District Electrical Pension Fund	84-6100393 001	Green	3/31/2023	Green	3/31/2022	15,158		15,097		12,007		No	No
National Electrical Benefit Fund	53-0181657 001	Green	12/31/2022	Green	12/31/2021	14,598		13,804		11,627		No	No
IBEW Local 332 Pension Plan Part A	94-2688032 004	Green	12/31/2022	Green	12/31/2021	4,292		5,723		6,409		No	No
IBEW Local 769 Management Pension Plan A	86-6049763 001	Green	6/30/2022	Green	6/30/2021	5,222		5,061		3,446		No	No
IBEW Local Union 1249 Pension Fund	15-6035161 001	Green	12/31/2022	Green	12/31/2021	5,706		3,791		3,684		No	No
Laborers Local Union 158 Pension Fund	23-6580323 001	Green	12/31/2022	Green	12/31/2021	3,246		256		37		No	No
Defined Contribution Plans:
National Electrical Annuity Plan	52-6132372 001		n/a		n/a	30,758		36,982		27,974		n/a	n/a
Eighth District Electrical Pension Fund Annuity Plan	84-6100393 002		n/a		n/a	3,624		3,347		5,097		n/a	n/a
San Mateo Country Electrical Construction Industry Retirement Plan	51-6052127 001		n/a		n/a	4,752		2,953		5,976		n/a	n/a
All other plans:						40,716		28,014		30,094
Total contributions:						$	179,208	$	155,838	$	145,880