There are two Company-sponsored pension plans. The primary Company-sponsored pension plan was frozen as of June 30, 2006 and no benefits accrued to participants after this date. The second Company-sponsored pension plan (the “Bargaining Plan”) is for certain employees under collective bargaining agreements. Benefits under the Bargaining Plan are determined in accordance with negotiated formulas for the respective participants. Contributions to the plans are based on actuarially determined amounts and are limited to the amounts currently deductible for income tax purposes.

	Second Quarter						First Half
(in thousands)	2019			2018			2019			2018
Service cost	$	1,206		$	1,413		$	2,413		$	2,825
Interest cost		3,062			2,856			6,125			5,712
Expected return on plan assets		(2,574	)		(3,852	)		(5,148	)		(7,704	)
Recognized net actuarial loss		900			933			1,801			1,866
Amortization of prior service cost		7			6			12			12
Net periodic pension cost	$	2,601		$	1,356		$	5,203		$	2,711

The Company did not make any contributions to the two Company sponsored pension plans during the first half of 2019. Contributions to the two Company-sponsored pension plans are expected to be in the range of $1 million to $2 million for the remainder of 2019.

The Company provides postretirement benefits for a portion of its current employees. The Company recognizes the cost of postretirement benefits, which consist principally of medical benefits, during covered employees’ periods of active service. The Company does not pre-fund these benefits and has the right to modify or terminate certain of these benefits in the future.

	Second Quarter						First Half
(in thousands)	2019			2018			2019			2018
Service cost	$	389		$	503		$	778		$	1,005
Interest cost		693			696			1,386			1,392
Recognized net actuarial loss		195			499			391			998
Amortization of prior service cost		(322	)		(462	)		(646	)		(924	)
Net periodic postretirement benefit cost	$	955		$	1,236		$	1,909		$	2,471