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Equity - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reclassification Adjustment Out of Accumulated Other Comprehensive Income (Loss) [Line Items]      
Defined benefit plan adjustments – actuarial losses $ (11,128) $ (3,327)  
Loss Before Income Taxes (70,963) (6,305) $ (6,246)
Tax (benefit) expense 62,075 (2,330) 8,624
Net Income (Loss) (2,037) (8,635) 2,378
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member]      
Reclassification Adjustment Out of Accumulated Other Comprehensive Income (Loss) [Line Items]      
Defined benefit plan adjustments – actuarial losses (113) (825) (1,212)
Loss Before Income Taxes 215 (989) (627)
Tax (benefit) expense (50) 299 224
Net Income (Loss) 165 (690) (403)
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized (Loss) Gain on Available-for-Sale Securities [Member]      
Reclassification Adjustment Out of Accumulated Other Comprehensive Income (Loss) [Line Items]      
Net investment gain $ 328 $ (164) $ 585