Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2024

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

Components of Net Periodic Benefit Cost

	UNITED STATES
(In thousands)	Three Months Ended June 30,						Six Months Ended June 30,
	2024			2023			2024			2023
Interest cost	$	1,652		$	1,731		$	3,303		$	3,462
Expected return on plan assets		(2,124	)		(2,133	)		(4,240	)		(4,266	)
Amortization of net actuarial loss		(3	)		(6	)		(6	)		(12	)
Net periodic benefit cost	$	(475	)	$	(408	)	$	(943	)	$	(816	)

	UNITED KINGDOM
(In thousands)	Three Months Ended June 30,						Six Months Ended June 30,
	2024			2023			2024			2023
Interest cost	$	160		$	169		$	321		$	333
Expected return on plan assets		(182	)		(175	)		(365	)		(345	)
Amortization of net actuarial loss		80			84			160			165
Net periodic benefit cost	$	58		$	78		$	116		$	153

Defined Contribution Plan Expenses for Company's Qualified Contribution Plans

Defined contribution plan expenses for the Company’s qualified contribution plans were as follows:

(In thousands)	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Retirement savings contributions	$	2,295	$	2,170	$	4,420	$	4,218
Profit sharing contributions		684		163		1,532		870
Total defined contribution plan expenses	$	2,979	$	2,333	$	5,952	$	5,088