Retirement Benefits (Tables)

12 Months Ended

Dec. 31, 2020

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

The following table presents our participation in these plans:


Pension Trust Fund	Pension Plan Employer Identification Number	Pension Protection Act (“PPA”) Certified Zone Status (1)		FIP / RP Status Pending/Implemented (2)	Contributions						Surcharge Imposed	Expiration Date of Collective Bargaining Agreement (3)
		2020	2019		2020		2019		2018
Pension Trust Fund for Operating Engineers Pension Plan	94-6090764	Yellow	Yellow	Yes	$	2,278	$	2,314	$	1,932	No	Various
Carpenter Funds Administrative Office	94-6050970	Red	Red	Yes	915		547		748		No	Various
Laborers Pension Trust for Northern California	94-6277608	Green	Green	Yes	787		857		880		No	Various
Cement Mason Pension Trust Fund For Northern California	94-6277669	Yellow	Yellow	Yes	426		320		504		No	Various
All other funds (4)					7,571		7,144		7,283
			Total Contributions:		$	11,977	$	11,182	$	11,347

(1) The most recent PPA zone status available in 2020 and 2019 is for the plan’s year-end during 2019 and 2018, respectively. The zone status is based on information that we received from the plan and is certified by the plan’s actuary. Among other factors, plans in the red zone are generally less than 65 percent funded, plans in the orange zone are less than 80 percent funded and have an Accumulated Funding Deficiency in the current year or projected into the next six years, plans in the yellow zone are less than 80 percent funded and plans in the green zone are at least 80 percent funded.

(2) Indicates whether the plan has a financial improvement plan (“FIP”) or a rehabilitation plan (“RP”) which is either pending or has been implemented.

(3) Lists the expiration date(s) of the collective-bargaining agreement(s) to which the plans are subject.

(4) These funds include multi-employer plans for pensions and other employee benefits. The total individually insignificant multi-employer pension costs contributed were $1,252, $829 and $1,300 for 2020, 2019 and 2018, respectively, and are included in the contributions to all other funds along with contributions to other types of benefit plans. Other employee benefits include certain coverage for medical, prescription drug, dental, vision, life and accidental death and dismemberment, disability and other benefit costs.