CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Utility plant:
Utility plant	$ 4,422,312	$ 4,197,344
Less accumulated depreciation and amortization	(1,434,700)	(1,350,482)
Net utility plant	2,987,612	2,846,862
Current assets:
Cash and cash equivalents	90,458	78,380
Restricted cash	22,984	2,273
Receivables:
Customers, net	79,239	60,785
Regulatory balancing accounts	54,654	78,597
Other, net	22,496	18,452
Unbilled revenue, net	43,417	32,760
Materials and supplies at weighted average cost	10,994	9,511
Taxes, prepaid expenses, and other assets	14,923	19,700
Total current assets	339,165	300,458
Other assets:
Regulatory assets	298,362	285,692
Goodwill	36,814	36,814
Other assets	144,445	153,445
Total other assets	479,621	475,951
TOTAL ASSETS	3,806,398	3,623,271
Capitalization:
Common stock, $0.01 par value; 136,000 shares authorized, 54,824 and 53,716 outstanding in 2022 and 2021, respectively	548	537
Additional paid-in capital	711,004	651,121
Retained earnings	561,907	525,936
Noncontrolling interests	4,873	5,386
Total equity	1,278,332	1,182,980
Long-term debt, net	1,053,944	1,055,794
Total capitalization	2,332,276	2,238,774
Current liabilities:
Current maturities of long-term debt, net	5,790	5,192
Short-term borrowings	70,000	35,000
Accounts payable	157,911	144,369
Regulatory balancing accounts	9,684	17,547
Accrued interest	17,338	6,542
Accrued expenses and other liabilities	61,824	47,926
Total current liabilities	322,547	256,576
Deferred income taxes	312,193	298,945
Pension	96,063	92,287
Regulatory liabilities and other	256,611	252,938
Advances for construction	199,277	198,086
Contributions in aid of construction	287,431	285,665
Commitments and contingencies (Note 10)
TOTAL CAPITALIZATION AND LIABILITIES	$ 3,806,398	$ 3,623,271