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Stockholders' Equity - Adjustments for Items Reclassified From AOCI (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Adjustment for items reclassified to earnings $ 205 $ 23,579 $ 127 $ 23,579
Total reclassifications, net of tax 1,010 25,037 1,781 26,373
Employee Benefit Plans [Member]        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amortization relating to employee benefit plans 1,053 1,941 2,169 3,658
Less - related income taxes 248 483 515 864
Total reclassifications, net of tax $ 805 $ 1,458 $ 1,654 $ 2,794