CONDENSED CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 7,868	$ 5,079
Restricted cash	7,052	4,426
Accounts receivable, net	129,671	159,556
Inventories	56,527	49,206
Regulatory assets	40,940	50,041
Other	11,655	11,887
Total current assets	253,713	280,195
Property, plant, and equipment, net	4,309,293	4,214,892
Goodwill	357,586	357,586
Regulatory assets	658,623	602,943
Other noncurrent assets	49,740	43,705
Total Assets	5,628,955	5,499,321
Current Liabilities:
Current maturities of capital leases	2,093	1,979
Short-term borrowings	269,738	300,811
Accounts payable	62,686	79,311
Accrued expenses	252,037	205,370
Regulatory liabilities	15,226	26,361
Total current liabilities	601,780	613,832
Long-term capital leases	22,767	24,346
Long-term debt	1,794,083	1,793,338
Deferred income taxes	634,278	575,582
Noncurrent regulatory liabilities	411,523	396,225
Other noncurrent liabilities	438,336	419,771
Total Liabilities	3,902,767	3,823,094
Commitments and Contingencies (Note 13)
Shareholders' Equity:
Common stock, par value $0.01; authorized 200,000,000 shares; issued and outstanding 52,175,549 and 48,563,559 shares, respectively; Preferred stock, par value $0.01; authorized 50,000,000 shares; none issued	522	520
Treasury stock at cost	(96,462)	(95,769)
Paid-in capital	1,395,666	1,384,271
Retained earnings	436,095	396,919
Accumulated other comprehensive loss	(9,633)	(9,714)
Total Shareholders' Equity	1,726,188	1,676,227
Total Liabilities and Shareholders' Equity	$ 5,628,955	$ 5,499,321