Consolidated Balance Sheets (not audited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current Assets
Cash and Cash Equivalents
Accounts Receivable:
Trade - Net	$ 67,315	$ 60,172
Other	18,248	13,179
Inventories	81,803	85,203
Deferred Income Taxes	54,498	49,482
Unbilled Revenues	14,352	17,996
Regulatory Assets	17,736	25,273
Other	8,588	7,187
Assets of Discontinued Operations	133	48,657
Total Current Assets	262,673	307,149
Investments	10,679	8,582
Other Assets	30,827	30,111
Goodwill	31,488	31,488
Other Intangibles - Net	10,863	11,251
Deferred Debits
Unamortized Debt Expense	3,949	4,300
Regulatory Assets	127,475	129,868
Total Deferred Debits	131,424	134,168
Plant
Electric Plant in Service	1,583,169	1,545,112
Nonelectric Operations	180,309	175,159
Construction Work in Progress	269,060	248,677
Total Gross Plant	2,032,538	1,968,948
Less Accumulated Depreciation and Amortization	699,113	700,418
Net Plant	1,333,425	1,268,530
Total Assets	1,811,379	1,791,279
Current Liabilities
Short-Term Debt	43,040	10,854
Current Maturities of Long-Term Debt	207	201
Accounts Payable	101,020	107,013
Accrued Salaries and Wages	14,077	19,256
Accrued Taxes	9,997	13,793
Derivative Liabilities	14,388	14,230
Other Accrued Liabilities	12,099	8,793
Liabilities of Discontinued Operations	3,260	27,559
Total Current Liabilities	198,088	201,699
Pensions Benefit Liability	93,545	102,711
Other Postretirement Benefits Liability	54,357	53,638
Other Noncurrent Liabilities	$ 24,319	$ 26,794
Commitments and Contingencies (note 9)
Deferred Credits
Deferred Income Taxes	$ 248,581	$ 230,810
Deferred Tax Credits	25,445	26,384
Regulatory Liabilities	77,972	77,013
Other	977	975
Total Deferred Credits	352,975	335,182
Capitalization
Long-Term Debt, Net of Current Maturities	498,384	498,489
Common Shares, Par Value $5 Per Share-Authorized, 50,000,000 Shares; Outstanding, 2015-37,565,590 Shares; 2014-37,218,053 Shares	187,828	186,090
Premium on Common Shares	287,066	278,436
Retained Earnings	119,239	112,903
Accumulated Other Comprehensive Loss	(4,422)	(4,663)
Total Common Equity	589,711	572,766
Total Capitalization	1,088,095	1,071,255
Total Liabilities and Equity	$ 1,811,379	$ 1,791,279
Cumulative Preferred Shares
Capitalization
Cumulative Shares
Cumulative Preference Shares
Capitalization
Cumulative Shares