CONDENSED CONSOLIDATED BALANCE SHEET (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 18,196	$ 5,928
Restricted cash	7,985	12,716
Accounts receivable, net	109,463	147,151
Inventories	59,376	59,532
Regulatory assets	39,423	48,900
Deferred income taxes	42,519	6,522
Other	10,162	9,450
Total current assets	287,124	290,199
Property, plant, and equipment, net	2,319,173	2,213,267
Goodwill	355,128	355,128
Regulatory assets	320,956	308,804
Other noncurrent assets	24,565	43,040
Total assets	3,306,946	3,210,438
Current Liabilities:
Current maturities of capital leases	1,585	1,370
Current maturities of long-term debt	0	3,792
Short-term borrowings	0	166,934
Accounts payable	62,238	76,735
Accrued expenses	214,136	193,939
Regulatory liabilities	43,757	33,184
Total current liabilities	321,716	475,954
Long-term capital leases	31,979	32,918
Long-term debt	1,055,067	905,049
Deferred income taxes	339,851	282,406
Noncurrent regulatory liabilities	273,744	265,987
Other noncurrent liabilities	395,770	389,012
Total liabilities	2,418,127	2,351,326
Commitments and Contingencies (Note 14)
Shareholders' Equity:
Common stock, par value $0.01; authorized 200,000,000 shares; issued and outstanding 40,790,925 and 37,214,807 respectively; Preferred stock, par value $0.01; authorized 50,000,000 shares; none issued	408	398
Treasury stock at cost	(90,830)	(90,273)
Paid-in capital	848,256	816,700
Retained earnings	127,756	128,631
Accumulated other comprehensive income	3,229	3,656
Total shareholders' equity	888,819	859,112
Total liabilities and shareholders' equity	$ 3,306,946	$ 3,210,438