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FAIR VALUE OF FINANCIAL INSTRUMENTS
3 Months Ended
Mar. 31, 2026
Fair Value Disclosures [Abstract]  
FAIR VALUE OF FINANCIAL INSTRUMENTS FAIR VALUE OF FINANCIAL INSTRUMENTS
 
Debt

The estimated fair value amounts were determined by the Corporation using available market information that is primarily based on quoted market prices for the same or similar issuances as of March 31, 2026. Accordingly, all of the Corporation’s debt is valued as a Level 2 financial instrument.  The fair values described below may not be indicative of net realizable value or reflective of future fair values.  Furthermore, the use of different methodologies to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.
March 31, 2026December 31, 2025
(In thousands)Carrying ValueEstimated Fair ValueCarrying ValueEstimated Fair Value
4.24% Senior notes due 2026
200,000 199,495 200,000 199,556 
4.05% Senior notes due 2028
67,500 66,550 67,500 66,769 
4.11% Senior notes due 2028
90,000 88,339 90,000 88,712 
3.10% Senior notes due 2030
150,000 138,360 150,000 138,721 
3.20% Senior notes due 2032
150,000 132,627 150,000 132,996 
4.49% Senior notes due 2032
200,000 190,139 200,000 191,143 
4.64% Senior notes due 2034
100,000 93,641 100,000 94,153 
Total debt957,500 909,151 957,500 912,050 
Debt issuance costs, net(1,075)(1,075)(1,125)(1,125)
Unamortized interest rate swap proceeds1,210 1,210 1,509 1,509 
Total debt, net$957,635 $909,286 $957,884 $912,434