v3.25.1
Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance, net of tax $ (10,410) $ (22,863)
Other comprehensive income (loss) before reclassification, before tax 4,396 3,522
Amounts reclassified from accumulated other comprehensive income (loss), before tax (13) 25
Other comprehensive income (loss), before tax 4,383 3,547
Income tax benefit (expense) (886) (679)
Ending balance, net of tax (6,913) (19,995)
Unrealized Gains and Losses on Available for Sale Securities    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance, net of tax (10,205) (22,715)
Other comprehensive income (loss) before reclassification, before tax 4,477 3,608
Amounts reclassified from accumulated other comprehensive income (loss), before tax (13) 25
Other comprehensive income (loss), before tax 4,464 3,633
Income tax benefit (expense) (903) (697)
Ending balance, net of tax (6,644) (19,779)
Foreign Currency Items    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance, net of tax (205) (148)
Other comprehensive income (loss) before reclassification, before tax (81) (86)
Amounts reclassified from accumulated other comprehensive income (loss), before tax 0 0
Other comprehensive income (loss), before tax (81) (86)
Income tax benefit (expense) 17 18
Ending balance, net of tax $ (269) $ (216)