XML 62 R49.htm IDEA: XBRL DOCUMENT v3.20.2
EMPLOYEE BENEFIT PLANS EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Income tax benefits reclassified from accumulated other comprehensive loss to income tax (expense) benefit        
Income tax benefit $ 1,000 $ 800 $ 2,100 $ 1,500
Other Postretirement Benefits Plan        
Components of net periodic benefit cost (income)        
Service cost 115 117 230 234
Interest cost 442 509 884 1,018
Expected return on plan assets (722) (570) (1,444) (1,140)
Amortization of prior service cost (credit) 0 (57) 0 (114)
Amortization of net loss 1 74 2 148
Net periodic benefit cost (income) (164) 73 (328) 146
Retirement Benefits        
Components of net periodic benefit cost (income)        
Service cost 2,036 1,954 4,072 3,908
Interest cost 4,574 5,126 9,148 10,252
Expected return on plan assets (6,232) (5,892) (12,464) (11,784)
Amortization of prior service cost (credit) 28 0 56 0
Amortization of net loss 4,571 3,158 9,142 6,316
Net periodic benefit cost (income) $ 4,977 $ 4,346 $ 9,954 $ 8,692