XML 17 R4.htm IDEA: XBRL DOCUMENT v3.23.1
Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Net unrealized gains (losses) on available-for-sale investment securities:    
Net unrealized gains (losses) on available-for-sale investment securities arising during the period, tax $ 6,079 $ (44,079)
Amortization of unrealized holding losses on held-to-maturity securities, net of taxes 1,346 0
Derivatives qualifying as cash flow hedges:    
Unrealized interest rate hedging arising during the period, tax 65 1,046
Reclassification adjustment for net unrealized losses included in net income, tax (17) 19
Retirement benefit plans:    
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax (122) 1,562
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, tax $ 147 $ (1,500)