Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The components of the net benefit for the Corporation’s Postretirement Benefits Plan ("Postretirement Plan") consisted of the following components:

	Three months ended March 31
	2019			2018
	(in thousands)
Interest cost	$	15		$	17
Net accretion and deferral	(139		)	(141		)
Net periodic benefit	$	(124	)	$	(124	)

The net periodic pension cost for the Corporation’s Defined Benefit Pension Plan ("Pension Plan") consisted of the following components:

	Three months ended March 31
	2019			2018
	(in thousands)
Interest cost	$	815		$	831
Expected return on plan assets	(689		)	(451		)
Net amortization and deferral	495			664
Net periodic pension cost	$	621		$	1,044