Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2023

Retirement Benefits [Abstract]

Components of Net Periodic Benefits Cost

The following tables show the components of net periodic benefit cost included in expense for the periods indicated.

							Other Post-
(in thousands)	Pension Benefits						Retirement Benefits
For The Three Months Ended June 30,	2023			2022			2023			2022
Service cost	$	1,979		$	2,929		$	10		$	25
Interest cost		5,963			3,708			149			76
Expected return on plan assets		(11,178	)		(11,711	)		—			—
Amortization of net (gain) or loss and prior service costs		1,911			582			(158	)		(139	)
Net periodic benefit cost	$	(1,325	)	$	(4,492	)	$	1		$	(38	)

							Other Post-
($ in thousands)	Pension Benefits						Retirement Benefits
For the Six Months Ended June 30,	2023			2022			2023			2022
Service cost	$	3,959		$	5,729		$	(21	)	$	50
Interest cost		11,751			7,125			365			153
Expected return on plan assets		(22,356	)		(23,186	)		—			—
Amortization of net (gain) or loss and prior service costs		3,681			1,930			(409	)		(278	)
Net periodic benefit cost	$	(2,965	)	$	(8,402	)	$	(65	)	$	(75	)