XML 54 R43.htm IDEA: XBRL DOCUMENT v3.23.2
Changes in Accumulated Other Comprehensive Income (Loss) By Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance $ 1,421,020 $ 1,377,406 $ 1,402,961 $ 1,366,217
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity 1,449 0 2,321 0
Income tax effect (368) 0 (589) 0
Other comprehensive income (loss), net of income tax effect (11,900) (62,333) (5,080) (119,901)
Ending balance 1,456,652 1,353,390 1,456,652 1,353,390
Unrealized Gains (Losses) on Available for Sale Securities        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (156,276) (62,548) (163,096) (4,980)
Unrealized gains (losses) arising during period, before tax (17,401) (88,224) (9,131) (167,082)
Income tax effect 4,420 22,938 2,319 43,441
Other comprehensive income (loss) before reclassifications (12,981) (65,286) (6,812) (123,641)
Reclassification adjustments for (gains) losses included in net income, before tax 0 3,991 0 5,054
Income tax effect 0 (1,038) 0 (1,314)
Amounts reclassified from accumulated other comprehensive income (loss) to net income 0 2,953 0 3,740
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity 1,449 0 2,321 0
Income tax effect (368) 0 (589) 0
Amortization of unrealized loss on securities transferred from available for sale to held to maturity 1,081 0 1,732 0
Other comprehensive income (loss), net of income tax effect (11,900) (62,333) (5,080) (119,901)
Ending balance $ (168,176) $ (124,881) $ (168,176) $ (124,881)