Defined Benefit Pension Plans

6 Months Ended

Jun. 30, 2021

Compensation And Retirement Disclosure [Abstract]

Defined Benefit Pension Plans

6. Defined Benefit Pension Plans

Net periodic cost related to all of the Company's defined benefit pension plans recognized in the Company's unaudited Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2021 and 2020 included the following components:

	Three Months Ended						Six Months Ended
(in thousands)	June 30, 2021			June 30, 2020			June 30, 2021			June 30, 2020
Service cost	$	316		$	311		$	619		$	631
Interest cost		2,857			4,097			5,675			8,238
Expected return on assets		(6,350	)		(6,945	)		(12,620	)		(13,963	)
Amortization of actuarial loss		2,529			2,614			5,171			5,234
Net periodic (benefit)/cost	$	(648	)	$	77		$	(1,155	)	$	140

For the three months ended June 30, 2021 and 2020, the non-service components of net periodic pension benefit of $(964,000) and $(234,000), respectively, are included in "Other Income (Expense), net" on the unaudited Condensed Consolidated Statement of Operations. For the six months ended June 30, 2021 and 2020, the non-service components of net periodic pension benefit of $(1,774,000) and $(491,000), respectively, are included in "Other Income (Expense), net" on the unaudited Condensed Consolidated Statement of Operations. For the six months ended June 30, 2021, the Company made contribution of $4,500,000 to the U.S. defined benefit pension plan and $358,000 to the U.K. defined benefit pension plans, respectively, as compared with $3,000,000 to the U.S. defined benefit pension plan and $288,000 to the U.K. defined benefit pension plans during the six months ended June 30, 2020.