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OTHER COMPREHENSIVE LOSS - Change in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ (83,999)  
Ending balance $ (862,693)   (862,693)  
Available-for-sale Securities [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (595,147) $ (14,708) (87,390) $ 55,725
Other comprehensive loss (270,937) (18,740) (778,694) (89,173)
Ending balance (866,084) (33,448) (866,084) (33,448)
Pension And Postretirement Benefit Plans [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 3,391 (270) 3,391 (270)
Other comprehensive loss 0 0 0 0
Ending balance $ 3,391 $ (270) $ 3,391 $ (270)