CONDENSED CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 8,969	$ 11,980
Restricted cash	6,588	6,634
Accounts receivable, net	115,833	154,410
Inventories	49,923	53,458
Regulatory assets	40,483	51,348
Other	16,195	8,830
Total current assets	237,991	286,660
Property, plant, and equipment, net	4,109,730	4,059,499
Goodwill	357,586	357,586
Regulatory assets	556,910	517,223
Other noncurrent assets	45,389	43,727
Total Assets	5,307,606	5,264,695
Current Liabilities:
Current maturities of capital leases	1,905	1,837
Short-term borrowings	256,806	229,874
Accounts payable	55,470	74,511
Accrued expenses	181,119	183,988
Regulatory liabilities	25,376	80,990
Total current liabilities	520,676	571,200
Long-term capital leases	25,373	26,325
Long-term debt	1,773,714	1,768,183
Deferred income taxes	553,824	501,532
Noncurrent regulatory liabilities	388,012	378,711
Other noncurrent liabilities	418,372	418,570
Total Liabilities	3,679,971	3,664,521
Commitments and Contingencies (Note 13)
Shareholders' Equity:
Common stock, par value $0.01; authorized 200,000,000 shares; issued and outstanding 51,956,014 and 48,311,079 shares, respectively; Preferred stock, par value $0.01; authorized 50,000,000 shares; none issued	520	518
Treasury stock at cost	(96,265)	(93,948)
Paid-in capital	1,380,345	1,376,291
Retained earnings	351,667	325,909
Accumulated other comprehensive loss	(8,632)	(8,596)
Total Shareholders' Equity	1,627,635	1,600,174
Total Liabilities and Shareholders' Equity	$ 5,307,606	$ 5,264,695