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

6 Months Ended

Jun. 30, 2020

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   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
Qualified Pension Plan
Service cost, benefits earned during the period	$	—	$	—	$	—	$	—
Interest cost on projected benefit obligation	322		378		644		757
Expected return on plan assets	(610)		(553)		(1,220)		(1,107)
Amortization of unrecognized transition obligation	—		—		—		—
Amortization of unrecognized prior service cost	—		—		—		—
Amortization of unrecognized net loss	49		49		98		98
Net periodic pension benefit	$	(239)	$	(126)	$	(478)	$	(252)
Supplemental Pension Plan
Service cost, benefits earned during the period	$	—	$	—	$	—	$	—
Interest cost on projected benefit obligation	10		13		20		26
Expected return on plan assets	—		—		—		—
Amortization of unrecognized prior service cost	—		—		—		—
Amortization of unrecognized net loss	3		1		6		2
Net periodic supplemental pension cost	$	13	$	14	$	26	$	28
Postretirement Plan, Medical and Life
Service cost, benefits earned during the period	$	—	$	—	$	—	$	—
Interest cost on projected benefit obligation	2		3		4		6
Expected return on plan assets	—		—		—		—
Amortization of unrecognized prior service cost	(55)		(55)		(110)		(110)
Amortization of unrecognized net loss	25		23		50		46
Net periodic postretirement, medical and life benefit	$	(28)	$	(29)	$	(56)	$	(58)