CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Property, Plant and Equipment:
Utility Plant, at original cost	$ 1,437,113	$ 1,384,797
Accumulated Depreciation	(346,603)	(337,993)
Property, Plant and Equipment - Net	1,090,510	1,046,804
Investments:
Available-for-Sale Securities	7,096	6,700
Restricted Investments	3,308	4,301
Total Investments	10,404	11,001
Current Assets:
Cash and Cash Equivalents	314	2,030
Accounts Receivable	71,132	37,619
Accounts Receivable - Related Parties	1,399	4,885
Unbilled Revenues	10,620	58,197
Provision for Uncollectibles	(4,545)	(4,577)
Natural Gas in Storage, average cost	20,533	20,109
Materials and Supplies, average cost	2,644	2,511
Prepaid Taxes	24,860	15,907
Derivatives - Energy Related Assets	1,858	5,864
Other Prepayments and Current Assets	4,284	2,353
Total Current Assets	133,099	144,898
Regulatory and Other Noncurrent Assets:
Regulatory Assets	241,754	248,413
Unamortized Debt Issuance Costs	6,426	6,718
Long-Term Receivables	7,250	7,285
Derivatives - Energy Related Assets	119	1,005
Other	2,643	2,511
Total Regulatory and Other Noncurrent Assets	258,192	265,932
Total Assets	1,492,205	1,468,635
Common Equity:
Common Stock, Par Value $2.50 per share: Authorized - 4,000,000 shares Outstanding - 2,339,139 shares	5,848	5,848
Other Paid-In Capital and Premium on Common Stock	200,841	200,841
Accumulated Other Comprehensive Loss	(9,209)	(9,120)
Retained Earnings	263,232	229,316
Total Common Equity	460,712	426,885
Long-Term Debt	365,000	340,000
Total Capitalization	825,712	766,885
Current Liabilities:
Notes Payable	60,500	58,900
Current Portion of Long-Term Debt	25,000	50,000
Accounts Payable - Commodity	9,599	26,915
Accounts Payable - Other	24,616	19,628
Accounts Payable - Related Parties	9,315	10,830
Derivatives - Energy Related Liabilities	4,526	11,406
Deferred Income Taxes - Net	1,378	4,982
Customer Deposits and Credit Balances	18,469	10,525
Environmental Remediation Costs	19,384	25,662
Taxes Accrued	1,870	1,915
Pension Benefits	1,182	1,182
Interest Accrued	6,943	7,011
Other Current Liabilities	3,502	5,156
Total Current Liabilities	186,284	234,112
Regulatory and Other Noncurrent Liabilities:
Regulatory Liabilities	56,069	69,248
Deferred Income Taxes - Net	261,743	239,648
Environmental Remediation Costs	62,865	61,731
Asset Retirement Obligations	28,285	27,925
Pension and Other Postretirement Benefits	62,593	59,754
Investment Tax Credits	1,056	1,207
Derivatives - Energy Related Liabilities	185	430
Derivatives - Other	3,261	3,150
Other	4,152	4,545
Total Regulatory and Other Noncurrent Liabilities	480,209	467,638
Total Capitalization and Liabilities	$ 1,492,205	$ 1,468,635