CONDENSED CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 9,027	$ 11,980
Restricted cash	6,831	6,634
Accounts receivable, net	134,983	154,410
Inventories	46,633	53,458
Regulatory assets	40,798	51,348
Other	12,204	8,830
Total current assets	250,476	286,660
Property, plant, and equipment, net	4,069,086	4,059,499
Goodwill	357,586	357,586
Regulatory assets	535,447	517,223
Other noncurrent assets	48,578	43,727
Total Assets	5,261,173	5,264,695
Current Liabilities:
Current maturities of capital leases	1,871	1,837
Short-term borrowings	161,913	229,874
Accounts payable	56,522	74,511
Accrued expenses	219,872	183,988
Regulatory liabilities	78,019	80,990
Total current liabilities	518,197	571,200
Long-term capital leases	25,849	26,325
Long-term debt	1,768,393	1,768,183
Deferred income taxes	527,343	501,532
Noncurrent regulatory liabilities	383,554	378,711
Other noncurrent liabilities	423,166	418,570
Total Liabilities	$ 3,646,502	$ 3,664,521
Commitments and Contingencies (Note 12)
Shareholders' Equity:
Common stock, par value $0.01; authorized 200,000,000 shares; issued and outstanding 51,954,883 and 48,306,885 shares, respectively; Preferred stock, par value $0.01; authorized 50,000,000 shares; none issued	$ 520	$ 518
Treasury stock at cost	(96,346)	(93,948)
Paid-in capital	1,379,133	1,376,291
Retained earnings	340,041	325,909
Accumulated other comprehensive loss	(8,677)	(8,596)
Total Shareholders' Equity	1,614,671	1,600,174
Total Liabilities and Shareholders' Equity	$ 5,261,173	$ 5,264,695