Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
UTILITY PLANT:
Utility plant in service	$ 5,015,126	$ 4,997,846
Less accumulated depreciation	2,048,423	2,030,497
Utility plant in service - net	2,966,703	2,967,349
Construction work in progress	922,662	898,330
Spare parts inventory	13,272	14,237
Property held for future use	1,002	1,002
Utility plant - net	3,903,639	3,880,918
OTHER ASSETS:
Nonutility property - at cost, less accumulated depreciation	510	512
Intangible Assets, Net (Excluding Goodwill)	11,208	11,976
Other long-term assets	5,670	5,916
Other assets - net	17,388	18,404
CURRENT ASSETS:
Cash and cash equivalents	34,410	34,953
Accounts receivable and unbilled revenue (less allowance for doubtful accounts of $3,262 and $2,498, respectively)	139,146	154,586
Fuel inventories - at average cost	35,750	30,237
Materials and supplies - at average cost	59,917	60,648
Regulatory assets	32,040	33,912
Prepayments and other current assets	35,252	33,504
Total current assets	336,515	347,840
DEFERRED DEBITS:
Regulatory assets	444,209	450,710
Miscellaneous	5,522	4,409
Total deferred debits	449,731	455,119
TOTAL	4,707,273	4,702,281
Common shareholders' equity:
Paid in capital	596,966	596,810
Accumulated deficit	(24,533)	(25,627)
Total common shareholders' equity	572,433	571,183
Cumulative preferred stock of subsidiary	59,784	59,784
Long-term debt (Note 5)	2,475,596	2,474,840
Total capitalization	3,107,813	3,105,807
CURRENT LIABILITIES:
Short-term and current portion of long-term debt (Note 5)	84,650	74,650
Accounts payable	93,483	119,511
Accrued expenses	20,511	18,754
Accrued real estate and personal property taxes	23,544	18,930
Regulatory liabilities	4,829	7,704
Accrued Income Taxes, Current	16,603	0
Accrued interest	42,201	32,541
Customer deposits	30,228	29,780
Other current liabilities	14,980	19,467
Total current liabilities	331,029	321,337
DEFERRED CREDITS AND OTHER LONG-TERM LIABILITIES:
Regulatory liabilities	676,676	670,294
Deferred income taxes - net	446,743	449,730
Non-current income tax liability	6,625	6,634
Unamortized investment tax credit	2,065	2,410
Accrued pension and other postretirement benefits	54,003	64,139
Asset retirement obligations	80,754	80,568
Miscellaneous	1,565	1,362
Total deferred credits and other long-term liabilities	1,268,431	1,275,137
COMMITMENTS AND CONTINGENCIES
TOTAL	$ 4,707,273	$ 4,702,281