XML 71 R61.htm IDEA: XBRL DOCUMENT v3.19.1
Pension and Other Post-Retirement Benefits (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Pension Benefits    
Components of net periodic (credit) expense:    
Interest cost [1] $ 1,415 $ 1,271
Expected return on plan assets [1] (3,483) (4,035)
Amortization of net actuarial loss [1] 2,509 1,795
Net periodic (credit) expense [1] 441 (969)
Post- Retirement Benefits    
Components of net periodic (credit) expense:    
Interest cost [1] 128 128
Amortization of prior-service costs [1] (62) (62)
Amortization of net actuarial loss [1] 31 76
Net periodic (credit) expense [1] $ 97 $ 142
[1] Amounts are included in G&A expense on the Consolidated Statements of Income and Comprehensive Income.