COMPONENTS OF QUARTERLY AND YEAR TO DATE NET PERIODIC BENEFIT COSTS (Tables)

9 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Components of net periodic benefit costs

The components of net periodic expense for the Corporation’s pension and other benefit plans for the periods indicated are as follows (in thousands):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2019			2018			2019			2018
Qualified Pension Plan
Service cost, benefits earned during the period	$	—		$	—		$	—		$	—
Interest cost on projected benefit obligation	379			385			1,136			1,154
Expected return on plan assets	(554		)	(826		)	(1,661		)	(2,478		)
Amortization of unrecognized transition obligation	—			—			—			—
Amortization of unrecognized prior service cost	—			—			—			—
Amortization of unrecognized net loss	49			43			147			130
Net periodic pension benefit	$	(126	)	$	(398	)	$	(378	)	$	(1,194	)
Supplemental Pension Plan
Service cost, benefits earned during the period	$	—		$	—		$	—		$	—
Interest cost on projected benefit obligation	13			12			39			36
Expected return on plan assets	—			—			—			—
Amortization of unrecognized prior service cost	—			—			—			—
Amortization of unrecognized net loss	1			1			3			5
Net periodic supplemental pension cost	$	14		$	13		$	42		$	41
Postretirement Plan, Medical and Life
Service cost, benefits earned during the period	$	—		$	—		$	—		$	—
Interest cost on projected benefit obligation	4			4			10			11
Expected return on plan assets	—			—			—			—
Amortization of unrecognized prior service cost	(55		)	(55		)	(165		)	(165		)
Amortization of unrecognized net loss	22			28			68			83
Net periodic postretirement, medical and life benefit	$	(29	)	$	(23	)	$	(87	)	$	(71	)