Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current Assets:
Cash	$ 0	$ 0
Receivables:
Trade	39,080	39,746
Other	1,485	606
Materials and supplies, at average cost	7,759	8,925
Exchange gas receivables	3,165	35,851
Regulatory assets	2,054	13,565
Other	1,801	3,627
Total current assets	214,495	414,790
Property, plant and equipment	3,974,900	3,836,254
Less-Accumulated depreciation and amortization	2,026,007	1,941,806
Total property, plant and equipment, net	1,948,893	1,894,448
Other Long-Term Assets:
Regulatory assets	35,796	15,951
Right-of-use assets	8,725	9,621
Deferred charges and other	19,450	15,167
Total other assets	63,971	40,739
Total assets	2,227,359	2,349,977
Payables:
Trade	47,822	25,761
Accrued liabilities:
Exchange gas payables	5,553	42,451
Regulatory liabilities	21,374	145,243
Taxes, other than income taxes	7,388	10,853
Interest	5,505	5,505
Customer advances	5,016	4,415
Other	10,588	4,011
Total current liabilities	116,026	250,354
Long-Term Debt	581,178	580,083
Other Long-Term Liabilities:
Regulatory liabilities	252,272	271,706
Asset retirement obligations	136,263	129,306
Lease liability	7,193	7,857
Other	1,231	2,394
Total other long-term liabilities	396,959	411,263
Contingent Liabilities and Commitments (Note 5)
Member's Equity:
Member’s capital	1,073,892	1,073,892
Retained earnings	59,304	34,385
Total member’s equity	1,133,196	1,108,277
Total liabilities and member’s equity	2,227,359	2,349,977
Related Party [Member]
Receivables:
Advances to affiliate	157,776	310,641
Affiliates	1,375	1,829
Payables:
Affiliates	$ 12,780	$ 12,115