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Accumulated Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive (Loss)
Following is a summary of AOCI(L) for 2025, 2024 and 2023:

 Gains (Losses) During the PeriodReclassification to Income
(in thousands)December 31,
2024		Pre-tax
Activity		Tax
Effect		Pre-tax
Activity		Tax
Effect		December 31,
2025
Net pension activity:      
Actuarial gain$4,418 $26 $(5)$— $— $4,439 
Prior service costs(85)(124)31 16 (5)(167)
Net postretirement benefits activity:
Actuarial gain (loss)2,960 (10,539)2,594 187 (46)(4,844)
Prior service costs(624)— — — — (624)
Unrealized gain on short-term investments25 20 (6)(53)14 — 
Reclassification of stranded tax effects(4,809)— — — — (4,809)
Total AOCI(L)$1,885 $(10,617)$2,614 $150 $(37)$(6,005)

Gains (Losses) During the PeriodReclassification to Income
(in thousands)December 31,
2023		Pre-tax
Activity		Tax
Effect		Pre-tax
Activity		Tax
Effect		December 31,
2024
Net pension activity:
Actuarial gain$533 $5,144 $(1,259)$— $— $4,418 
Prior service costs(97)— — 16 (4)(85)
Net postretirement benefits activity:
Actuarial gain721 2,920 (715)44 (10)2,960 
Prior service costs(624)— — — — (624)
Unrealized gain on short-term investments— 33 (8)— — 25 
Reclassification of stranded tax effects(4,809)— — — — (4,809)
Total AOCI(L)$(4,276)$8,097 $(1,982)$60 $(14)$1,885 

Gains (Losses) During the PeriodReclassification to Income
(in thousands)December 31,
2022		Pre-tax
Activity		Tax
Effect		Pre-tax
Activity		Tax
Effect		December 31,
2023
Net pension activity:
Actuarial loss$(71,140)$3,036 $(744)$1,946 $(476)$(67,378)
Prior service costs(105)(5)1 16 (4)(97)
Pension plan settlement— — — 112,796 (44,885)67,911 
Net postretirement benefits activity:
Actuarial gain6,752 (7,986)1,955 — — 721 
Prior service costs(624)— — — — (624)
Reclassification of stranded tax effects(19,720)— — — 14,911 (4,809)
Total AOCI(L)$(84,837)$(4,955)$1,212 $114,758 $(30,454)$(4,276)