XML 25 R76.htm IDEA: XBRL DOCUMENT v3.19.3
Employee Benefit Plans (Components Of Net Periodic Benefit Expense) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]        
Service cost $ 801 $ 836 $ 2,405 $ 2,509
Interest cost on projected benefit obligation 696 598 2,086 1,793
Expected return on plan assets (1,184) (1,321) (3,552) (3,963)
Amortization of unrecognized prior service credit (16) (18) (49) (54)
Amortization of unrecognized net actuarial loss 366 188 1,098 563
Net periodic benefit expense $ 663 $ 283 $ 1,988 $ 848