XML 72 R60.htm IDEA: XBRL DOCUMENT v3.20.2
COMPONENTS OF QUARTERLY AND YEAR TO DATE NET PERIODIC BENEFIT COSTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Qualified Pension Plan        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost, benefits earned during the period $ 0 $ 0 $ 0 $ 0
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 0 0 0 0
Amortization of unrecognized prior service cost 0 0 0 0
Amortization of unrecognized net loss 49 49 98 98
Net periodic pension benefit (239) (126) (478) (252)
Supplemental Pension Plan        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost, benefits earned during the period 0 0 0 0
Interest cost on projected benefit obligation 10 13 20 26
Expected return on plan assets 0 0 0 0
Amortization of unrecognized prior service cost 0 0 0 0
Amortization of unrecognized net loss 3 1 6 2
Net periodic pension benefit 13 14 26 28
Postretirement Plan, Medical and Life        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost, benefits earned during the period 0 0 0 0
Interest cost on projected benefit obligation 2 3 4 6
Expected return on plan assets 0 0 0 0
Amortization of unrecognized prior service cost (55) (55) (110) (110)
Amortization of unrecognized net loss 25 23 50 46
Net periodic pension benefit $ (28) $ (29) $ (56) $ (58)