Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
UTILITY PLANT:
Utility plant in service	$ 5,342,196	$ 4,997,846
Less accumulated depreciation	2,110,899	2,030,497
Utility plant in service - net	3,231,297	2,967,349
Construction work in progress	703,231	898,330
Spare parts inventory	14,428	14,237
Property held for future use	1,002	1,002
Utility plant - net	3,949,958	3,880,918
OTHER ASSETS:
Nonutility property - at cost, less accumulated depreciation	504	512
Intangible Assets, Net (Excluding Goodwill)	10,812	11,976
Other long-term assets	6,005	5,916
Other assets - net	17,321	18,404
CURRENT ASSETS:
Cash and cash equivalents	26,327	34,953
Accounts receivable and unbilled revenue (less allowance for doubtful accounts of $3,262 and $2,498, respectively)	151,951	154,586
Fuel inventories - at average cost	34,162	30,237
Materials and supplies - at average cost	61,139	60,648
Regulatory assets	32,784	33,912
Prepayments and other current assets	30,964	33,504
Total current assets	337,327	347,840
DEFERRED DEBITS:
Regulatory assets	436,956	450,710
Miscellaneous	4,224	4,409
Total deferred debits	441,180	455,119
TOTAL	4,745,786	4,702,281
Common shareholders' equity:
Paid in capital	597,296	596,810
Accumulated deficit	(19,645)	(25,627)
Total common shareholders' equity	577,651	571,183
Cumulative preferred stock of subsidiary	59,784	59,784
Long-term debt (Note 5)	2,477,051	2,474,840
Total capitalization	3,114,486	3,105,807
CURRENT LIABILITIES:
Short-term and current portion of long-term debt (Note 5)	120,500	74,650
Accounts payable	107,809	119,511
Accrued expenses	23,196	18,754
Accrued real estate and personal property taxes	21,951	18,930
Regulatory liabilities	5,181	7,704
Accrued Income Taxes, Current	3,054	0
Accrued interest	35,492	32,541
Customer deposits	30,600	29,780
Other current liabilities	10,451	19,467
Total current liabilities	358,234	321,337
DEFERRED CREDITS AND OTHER LONG-TERM LIABILITIES:
Regulatory liabilities	690,363	670,294
Deferred income taxes - net	445,539	449,730
Non-current income tax liability	6,687	6,634
Unamortized investment tax credit	1,376	2,410
Accrued pension and other postretirement benefits	48,310	64,139
Asset retirement obligations	80,077	80,568
Miscellaneous	714	1,362
Total deferred credits and other long-term liabilities	1,273,066	1,275,137
TOTAL	$ 4,745,786	$ 4,702,281