XML 53 R57.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Employee Benefit Plans - Estimated Future Benefit Payments for Defined Benefit Pension and Postretirement Benefit Plans (Detail)
$ in Thousands
Dec. 31, 2019
USD ($)
Defined benefit pension plans  
Defined Benefit Plan Disclosure [Line Items]  
2020 $ 37,686
2021 37,456
2022 39,617
2023 38,545
2024 38,912
2025–2027 175,229
Postretirement benefit plans  
Defined Benefit Plan Disclosure [Line Items]  
2020 750
2021 750
2022 650
2023 650
2024 650
2025–2027 $ 2,440