Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
UTILITY PLANT:
Utility plant in service	$ 4,885,709	$ 4,658,023
Less accumulated depreciation	2,268,586	2,264,606
Utility plant in service - net	2,617,123	2,393,417
Construction work in progress	470,409	447,399
Spare parts inventory	13,009	14,816
Property held for future use	1,002	1,002
Utility plant - net	3,101,543	2,856,634
OTHER ASSETS:
Nonutility property - at cost, less accumulated depreciation	520	522
Other long-term assets	6,399	6,221
Other assets - net	6,919	6,743
CURRENT ASSETS:
Cash and cash equivalents	56,726	26,933
Accounts receivable and unbilled revenue (less allowance for doubtful accounts of $2,445 and $2,076, respectively)	132,911	139,709
Fuel inventories - at average cost	68,161	47,550
Materials and supplies - at average cost	60,390	60,185
Deferred tax asset - current	55,383	61,782
Regulatory assets	2,132	93
Prepayments and other current assets	39,287	23,161
Total current assets	414,990	359,413
DEFERRED DEBITS:
Regulatory assets	425,598	419,193
Miscellaneous	36,336	25,835
Total deferred debits	461,934	445,028
TOTAL	3,985,386	3,667,818
Common shareholders' equity:
Paid in capital	383,223	168,610
Accumulated deficit	(39,566)	(17,339)
Total common shareholders' equity	343,657	151,271
Cumulative preferred stock of subsidiary	59,784	59,784
Long-term debt	1,825,071	1,951,013
Total capitalization	2,228,512	2,162,068
CURRENT LIABILITIES:
Short-term and current portion of long-term debt	270,380	50,000
Accounts payable	147,962	110,623
Accrued expenses	23,077	25,187
Accrued real estate and personal property taxes	19,171	19,177
Regulatory liabilities	37,473	27,943
Accrued interest	24,572	30,726
Customer deposits	29,214	28,337
Other current liabilities	12,560	12,881
Total current liabilities	564,409	304,874
DEFERRED CREDITS AND OTHER LONG-TERM LIABILITIES:
Regulatory liabilities	624,955	610,917
Deferred income taxes - net	426,174	421,127
Non-current income tax liability	7,147	7,042
Unamortized investment tax credit	4,570	5,229
Accrued pension and other postretirement benefits	68,305	96,464
Asset retirement obligations	60,553	59,098
Miscellaneous	761	999
Total deferred credits and other long-term liabilities	$ 1,192,465	$ 1,200,876
COMMITMENTS AND CONTINGENCIES
TOTAL	$ 3,985,386	$ 3,667,818