RETIREMENT BENEFIT PLAN

6 Months Ended

Jun. 30, 2022

Retirement Benefits [Abstract]

Retirement Benefits

11. RETIREMENT BENEFIT PLANS

In connection with the acquisition of Transtar, we established a defined benefit pension plan as well as a postretirement benefit plan to assume certain retirement benefit obligations related to eligible Transtar employees.

Defined Benefit Pensions

Our partially funded pension plan is a tax qualified plan. Our pension plan covers certain eligible Transtar employees. These plans are noncontributory. Pension benefits earned are generally based on years of service and compensation during active employment.

Postretirement Benefits

Our unfunded postretirement plan provides healthcare and life insurance benefits for eligible retirees and dependents of Transtar. Depending on retirement date and employee classification, certain healthcare plans contain contribution and cost-sharing features such as deductibles and co-insurance. The remaining healthcare and life insurance plans are non-contributory.

The following table summarizes our retirement benefit plan costs for the three and six months ended June 30, 2022. Service costs and interest costs are recorded in Operating expenses and Other (expense) income, respectively, in the Consolidated Statements of Operations.

	Three Months Ended June 30, 2022				Six Months Ended June 30, 2022
	Pension Benefits		Postretirement Benefits		Pension Benefits		Postretirement Benefits
Service costs	$	438	$	538	$	876	$	1,075
Interest costs	74		225		148		450
Total	$	512	$	763	$	1,024	$	1,525

The total amount of employer contributions paid for the six months ended June 30, 2022 was $0.3 million, and the expected remaining scheduled employer contributions for the fiscal year ending December 31, 2022 is $1.2 million.