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Employee Benefit Plans - Components of Net Periodic Benefit Cost (Credit) (Detail) - Pension Plans [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Components of Net Periodic Benefit Cost (Credit):    
Service cost $ 211 $ 226
Interest cost 3,000 2,115
Expected return on plan assets (6,624) (6,534)
Amortization of:    
Prior service cost 29 30
Net actuarial loss (gain) 1,087 1,687
Settlement loss 436 380
Net periodic benefit cost (credit) $ (1,861) $ (2,096)