v3.26.1
Stockholders' Equity (Line Items in Consolidated Income Statements Affected by Amounts Reclassified from Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Employee Benefit Plans [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Amortization of defined benefit pension and post-retirement items $ (496)  
Reclassification out of Accumulated Other Comprehensive Income [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Total reclassifications, net of tax [1] (86,229) $ (15,156)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Available for Sale Securities [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Loss on sale of AFS securities [1] (98,595) 0
Tax effect [1] 22,222 0
Net of tax [1] (76,373) 0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Held to Maturity Securities Transferred from AFS [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Amortization of unrealized net loss on securities transferred to HTM [1] (813) (792)
Tax effect [1] 184 196
Net of tax [1] (629) (596)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Employee Benefit Plans [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Amortization of defined benefit pension and post-retirement items [1],[2] (270) (1,888)
Tax effect [1] 61 594
Net of tax [1] (209) (1,294)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains and Losses on Cash Flow Hedges [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Reclassification of unrealized loss on cash flow hedges [1] (8,634) (14,159)
Tax effect [1] 1,947 3,235
Net of tax [1] (6,687) (10,924)
Amortization of loss on terminated cash flow hedges [1] $ (3,010) $ (3,036)
OCI, Cash Flow Hedge, Reclassification for Discontinuance, Statement of Income or Comprehensive Income [Extensible Enumeration] Interest and Dividend Income, Operating Interest and Dividend Income, Operating
Tax effect [1] $ 679 $ 694
Net of tax [1] $ (2,331) $ (2,342)
[1] Amounts in parentheses indicate reduction in net income.
[2] These AOCI components are included in the computation of net periodic pension and post-retirement cost that is reported with other noninterest
expense (see Note 12 – Retirement Plans for additional details).