Consolidated Balance Sheets (not audited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current Assets
Cash and Cash Equivalents
Accounts Receivable:
Trade - Net	69,556	62,974
Other	7,082	9,073
Inventories	80,848	85,416
Unbilled Revenues	14,882	17,869
Income Taxes Receivable		4,000
Regulatory Assets	19,958	18,904
Other	11,139	8,453
Assets of Discontinued Operations	249
Total Current Assets	203,714	206,689
Investments	8,065	8,284
Other Assets	33,707	32,784
Goodwill	37,572	39,732
Other Intangibles - Net	15,291	15,673
Regulatory Assets	118,123	127,707
Plant
Electric Plant in Service	1,842,931	1,820,763
Nonelectric Operations	215,074	201,343
Construction Work in Progress	143,999	79,612
Total Gross Plant	2,202,004	2,101,718
Less Accumulated Depreciation and Amortization	749,569	713,904
Net Plant	1,452,435	1,387,814
Total Assets	1,868,907	1,818,683
Current Liabilities
Short-Term Debt	37,173	80,672
Current Maturities of Long-Term Debt	85,490	52,422
Accounts Payable	77,704	89,499
Accrued Salaries and Wages	15,573	16,182
Accrued Taxes	12,635	14,827
Other Accrued Liabilities	16,050	15,416
Liabilities of Discontinued Operations	1,631	2,098
Total Current Liabilities	246,256	271,116
Pensions Benefit Liability	95,653	104,912
Other Postretirement Benefits Liability	49,718	48,730
Other Noncurrent Liabilities	25,857	23,854
Commitments and Contingencies (note 9)
Deferred Credits
Deferred Income Taxes	222,244	207,669
Deferred Tax Credits	23,264	24,506
Regulatory Liabilities	79,835	77,432
Other	8,604	11,595
Total Deferred Credits	333,947	321,202
Capitalization
Long-Term Debt - Net	460,757	443,846
Common Shares, Par Value $5 Per Share - Authorized, 50,000,000 Shares; Outstanding, 2016-39,224,553 Shares; 2015-37,857,186 Shares	196,123	189,286
Premium on Common Shares	329,288	293,610
Retained Earnings	134,884	126,025
Accumulated Other Comprehensive Loss	(3,576)	(3,898)
Total Common Equity	656,719	605,023
Total Capitalization	1,117,476	1,048,869
Total Liabilities and Equity	1,868,907	1,818,683
Cumulative Preferred Shares
Capitalization
Cumulative Shares
Cumulative Preference Shares
Capitalization
Cumulative Shares