BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Property, plant and equipment
Property, plant and equipment	$ 7,494,631	$ 7,274,268
Accumulated depreciation and amortization	2,137,601	2,083,433
Net property, plant and equipment	5,357,030	5,190,835
Current assets
Cash and cash equivalents	7,385	8,852
Accounts receivable, net	242,671	341,756
Materials and supplies	62,819	54,892
Natural gas in storage	198,306	179,646
Regulatory assets, Current	1,609,763	1,611,676
Other current assets	27,929	27,742
Total current assets	2,148,873	2,224,564
Goodwill and other assets
Regulatory assets, Noncurrent	637,021	724,862
Goodwill	157,953	157,953
Other assets	110,535	103,906
Total goodwill and other assets	905,509	986,721
Total assets	8,411,412	8,402,120
Equity and long-term debt
Common stock, $0.01 par value: authorized 250,000,000 shares; issued and outstanding 54,137,217 shares at June 30, 2022; issued and outstanding 53,633,210 shares at December 31, 2021	541	536
Paid-in Capital	1,830,678	1,790,362
Retained earnings	628,805	565,161
Accumulated other comprehensive loss	(6,428)	(6,527)
Total equity	2,453,596	2,349,532
Long-term debt, excluding current maturities and net of issuance costs of $12,038 and $12,418, respectively	2,283,865	3,683,378
Total equity and long-term debt	4,737,461	6,032,910
Current liabilities
Long-term Debt, Current Maturities	1,400,011	11
Short-term debt	490,100	494,000
Accounts payable	186,425	258,554
Accrued taxes other than income	58,183	67,035
Regulatory Liability, Current	33,755	8,090
Customer deposits	60,277	62,454
Other current liabilities	99,534	90,349
Total current liabilities	2,328,285	980,493
Deferred credits and other liabilities
Deferred income taxes	690,751	695,284
Regulatory Liability, Noncurrent	538,717	552,928
Employee benefit obligations	25,131	35,226
Other deferred credits	91,067	105,279
Liabilities, Other than Long-term Debt, Noncurrent	1,345,666	1,388,717
Commitments and contingencies
Total liabilities and equity	$ 8,411,412	$ 8,402,120