CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Utility plant:
Utility plant	$ 5,498,140	$ 5,400,489
Less accumulated depreciation and amortization	(1,267,925)	(1,241,785)
Net utility plant	4,230,215	4,158,704
Current assets:
Cash and cash equivalents	44,460	50,121
Restricted cash	45,675	45,566
Receivables:
Customers, net	53,888	58,585
Regulatory balancing accounts	62,286	55,917
Other, net	32,818	33,976
Accrued and unbilled revenue, net	34,974	39,718
Materials and supplies	20,283	20,511
Taxes, prepaid expenses, and other assets	24,839	19,742
Total current assets	319,223	324,136
Other assets:
Regulatory assets	367,231	357,406
Goodwill	37,063	37,063
Other	304,019	302,974
Total other assets	708,313	697,443
TOTAL ASSETS	5,257,751	5,180,283
Capitalization:
Common stock, $0.01 par value; 136,000 shares authorized, 59,570 and 59,484 outstanding on March 31, 2025 and December 31, 2024, respectively	596	595
Additional paid-in capital	967,689	966,975
Retained earnings	668,023	674,918
Accumulated other comprehensive loss	(7,063)	(7,217)
Noncontrolling interest	2,744	3,015
Total equity	1,631,989	1,638,286
Long-term debt, net	1,104,373	1,104,571
Total capitalization	2,736,362	2,742,857
Current liabilities:
Current maturities of long-term debt, net	72,445	72,422
Short-term borrowings	285,000	205,000
Accounts payable	141,295	167,533
Regulatory balancing accounts	19,109	22,648
Accrued other taxes	6,708	6,084
Accrued interest	19,829	8,406
Other accrued liabilities	59,698	56,271
Total current liabilities	604,084	538,364
Deferred income taxes	416,230	411,083
Regulatory liabilities	826,595	814,551
Pension	82,007	81,665
Advances for construction	202,423	202,614
Contributions in aid of construction	293,956	294,970
Other	96,094	94,179
Commitments and contingencies (Note 9)
TOTAL CAPITALIZATION AND LIABILITIES	$ 5,257,751	$ 5,180,283