Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2019

Pension Benefits

Employee Benefit Plans [Line Items]

Schedule of Defined Benefit Plans Disclosures

The following are components of the net periodic benefit cost for the pension and postretirement benefit plans maintained by the Company for the three and six months ended June 30, 2019 and 2018:

	Pension Benefits
(in thousands)	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
Interest cost	$	29	$	32	$	58	$	65
Recognized net actuarial loss	58		61		116		122
Benefit cost	$	87	$	93	$	174	$	187

Postretirement Benefits

Employee Benefit Plans [Line Items]

Schedule of Defined Benefit Plans Disclosures

	Postretirement Benefits
(in thousands)	Three months ended June 30,						Six months ended June 30,
	2019			2018			2019			2018
Service cost	$	64		$	75		$	138		$	162
Interest cost	221			190			427			377
Amortization of prior service cost	(228		)	(228		)	(456		)	(456		)
Benefit cost	$	57		$	37		$	109		$	83