XML 121 R107.htm IDEA: XBRL DOCUMENT v3.20.4
Benefit Plans - Anticipated Future Pension Benefit Payments (Detail) - Pension Plans
$ in Thousands
Dec. 31, 2020
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2021 $ 13,526
2022 14,312
2023 15,100
2024 15,736
2025 16,377
2026 - 2030 $ 89,826