RETIREMENT PLANS (Tables)

3 Months Ended

Mar. 31, 2019

Pension Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Net Periodic Benefit Cost

The components of net periodic benefit cost for the Company’s defined benefit plans for the three months ended March 31, 2019 and 2018 were as follows (in thousands):

	Pension Benefits
	Pension Plan						SERP
	Three months ended March 31,						Three months ended March 31,
Components of net periodic benefit cost:	2019			2018			2019		2018
Service cost	$	1,768		$	2,227		$	—	$	—
Interest cost		4,207			3,631			13		12
Expected return on plan assets		(5,224	)		(5,323	)		—		—
Amortization of actuarial loss		678			705			7		6
Net periodic benefit cost	$	1,429		$	1,240		$	20	$	18

Other Postretirement Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

Net Periodic Benefit Cost

The components of net periodic benefit cost for the Company’s postretirement benefit plan for the three months ended March 31, 2019 and 2018 were as follows (in thousands):

	Other Postretirement Benefits
	Postretirement Welfare Plan
	Three months ended March 31,
	2019			2018
Components of net periodic benefit cost:
Service cost	$	—		$	—
Interest cost		8			6
Amortization of actuarial gain		(135	)		(149	)
Net periodic benefit cost	$	(127	)	$	(143	)