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Employee Benefit Plans - Components of Net Periodic Defined Benefit Cost (Income) (Detail) - Defined Benefit Pension Plans - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Defined Benefit Plan Disclosure [Line Items]        
Interest cost $ 279 $ 355 $ 432 $ 710
Expected return on plan assets (398) (461) (796) (922)
Recognized actuarial losses 376 380 752 760
Total $ 257 $ 274 $ 388 $ 548