XML 22 R4.htm IDEA: XBRL DOCUMENT v3.22.1
Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
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 $ (44,079) $ (16,616)
Reclassification adjustment for net realized gains included in net income, tax 0 (142)
Derivatives qualifying as cash flow hedges:    
Unrealized interest rate hedging arising during the period, tax 1,046 542
Reclassification adjustment for net unrealized losses included in net income, tax 19 0
Retirement benefit plans:    
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, tax 1,562 2,084
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, tax $ (1,500) $ (2,015)