CONDENSED CONSOLIDATED BALANCE SHEETS Unaudited - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Utility plant:
Utility plant	$ 2,667,635	$ 2,506,946
Less accumulated depreciation and amortization	(849,884)	(805,178)
Net utility plant	1,817,751	1,701,768
Current assets:
Cash and cash equivalents	21,351	8,837
Receivables:
Customers	45,376	31,512
Regulatory balancing accounts	19,811	35,052
Other	14,199	14,760
Unbilled revenue	33,727	23,181
Materials and supplies at weighted average cost	6,256	6,339
Taxes, prepaid expenses, and other assets	10,407	7,897
Total current assets	151,127	127,578
Other assets:
Regulatory assets	363,597	361,893
Goodwill	2,615	2,615
Other assets	50,953	47,399
Total other assets	417,165	411,907
TOTAL ASSETS	2,386,043	2,241,253
Capitalization:
Common stock, $0.01 par value; 68,000 shares authorized, 47,968 and 47,875 outstanding in 2016 and 2015, respectively	480	479
Additional paid-in capital	334,213	333,135
Retained earnings	317,319	308,541
Total common stockholders’ equity	652,012	642,155
Long-term debt, less current maturities	555,536	508,002
Total capitalization	1,207,548	1,150,157
Current liabilities:
Current maturities of long-term debt	6,130	6,043
Short-term borrowings	57,100	33,615
Accounts payable	84,052	66,380
Regulatory balancing accounts	2,837	2,227
Accrued interest	12,733	5,088
Accrued expenses and other liabilities	41,129	34,545
Total current liabilities	203,981	147,898
Unamortized investment tax credits	1,872	1,872
Deferred income taxes	282,973	264,897
Pension and postretirement benefits other than pensions	237,341	236,266
Regulatory liabilities and other	90,714	82,414
Advances for construction	182,001	180,172
Contributions in aid of construction	179,613	177,577
Commitments and contingencies (Note 10)	0	0
TOTAL CAPITALIZATION AND LIABILITIES	$ 2,386,043	$ 2,241,253