v3.26.1
Accumulated Other Comprehensive Income (Loss)
6 Months Ended
Jun. 30, 2026
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Comprehensive Income (Loss) Note [Text Block] Accumulated Other Comprehensive Income (Loss)
The following table presents the changes in the components of AOCI for the three and six months ended June 30, 2026 and 2025 (in thousands).
Net Unrealized
 Gains (Losses) on
 Available-for-Sale
 Securities (1)
Net Unrealized
Gains (Losses)
 on Cash Flow Hedges
Postretirement
 Benefits
Total
 AOCI
Three Months Ended June 30, 2026
Balance at April 1, 2026$183,119 $21,488 $805 $205,412 
Reclassifications from AOCI to net income
Gains on cash flow hedges included in interest expense— (2,566)— (2,566)
Amortization of prior service costs and net actuarial gains recognized in other income (loss)
— — (18)(18)
Other amounts of other comprehensive income (loss)
Net unrealized gains on available-for-sale securities58,671 — — 58,671 
Unrealized gains on cash flow hedges— 5,177 — 5,177 
Total other comprehensive income (loss)58,671 2,611 (18)61,264 
Balance at June 30, 2026$241,790 $24,099 $787 $266,676 
Three Months Ended June 30, 2025
Balance at April 1, 2025$125,425 $38,844 $849 $165,118 
Reclassifications from AOCI to net income
Gains on cash flow hedges included in interest expense— (5,977)— (5,977)
Amortization of prior service costs and net actuarial gains recognized in other income (loss)
— — (17)(17)
Other amounts of other comprehensive income (loss)
Net unrealized losses on available-for-sale securities(54,661)— — (54,661)
Unrealized losses on cash flow hedges— (3,293)— (3,293)
Total other comprehensive loss(54,661)(9,270)(17)(63,948)
Balance at June 30, 2025$70,764 $29,574 $832 $101,170 
_____________________________
(1) Net unrealized gains (losses) on available-for-sale securities are net of unrealized gains and losses relating to hedged interest rate risk included in net income.
Net Unrealized
 Gains (Losses) on
 Available-for-Sale
 Securities (1)
Net Unrealized Gains (Losses)
 on Cash Flow Hedges
Postretirement
 Benefits
Total
 AOCI
Six Months Ended June 30, 2026
Balance at January 1, 2026$183,147 $20,525 $796 $204,468 
Reclassifications from AOCI to net income
Gains on cash flow hedges included in interest expense— (5,961)— (5,961)
Amortization of prior service costs and net actuarial gains recognized in other income (loss)
— — (45)(45)
Other amounts of other comprehensive income (loss)
Net unrealized gains on available-for-sale securities58,643 — — 58,643 
Unrealized gains on cash flow hedges— 9,535 — 9,535 
Actuarial gain— — 36 36 
Total other comprehensive income (loss)58,643 3,574 (9)62,208 
Balance at June 30, 2026$241,790 $24,099 $787 $266,676 
Six Months Ended June 30, 2025
Balance at January 1, 2025$125,305 $52,322 $1,043 $178,670 
Reclassifications from AOCI to net income
Gains on cash flow hedges included in interest expense— (11,709)— (11,709)
Amortization of prior service costs and net actuarial gains recognized in other income (loss)
— — (64)(64)
Other amounts of other comprehensive income (loss)
Net unrealized losses on available-for-sale securities(54,541)— — (54,541)
Unrealized losses on cash flow hedges— (11,039)— (11,039)
Actuarial loss— — (147)(147)
Total other comprehensive loss(54,541)(22,748)(211)(77,500)
Balance at June 30, 2025$70,764 $29,574 $832 $101,170 
_____________________________
(1) Net unrealized gains (losses) on available-for-sale securities are net of unrealized gains and losses relating to hedged interest rate risk included in net income.