XML 141 R122.htm IDEA: XBRL DOCUMENT v3.22.4
Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) and Related Tax Effects (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Reclassifications, before tax $ 0 $ 0 $ (7)
Other comprehensive income (loss) (194,886) (11,299) 17,502
Net unrealized loss on available for sale securities      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
OCI, before reclassifications, before tax (290,157) (19,575) 15,803
Reclassifications, before tax 0 0 (7)
OCI, after reclassifications, before tax (290,157) (19,575) 15,796
Tax effect 85,781 5,787 (4,670)
Other comprehensive income (loss) (204,376) (13,788) 11,126
Unfunded status of the supplemental retirement plans      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
OCI, before reclassifications, before tax 11,522 3,497 645
Reclassifications, before tax (20) 196 9,254
OCI, after reclassifications, before tax 11,502 3,693 9,899
Tax effect (3,401) (1,091) (2,927)
Other comprehensive income (loss) 8,101 2,602 6,972
Amortization of prior service cost      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Reclassifications, before tax (28) (58) (55)
Amortization of actuarial losses      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Reclassifications, before tax 8 254 9,309
Joint beneficiary agreement liability, net of tax      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
OCI, before reclassifications, before tax 1,389 (113) (596)
Tax effect 0 0 0
OCI, before reclassifications, net of tax $ 1,389 $ (113) $ (596)