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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
OPERATING REVENUES    
Utility $ 151,606 $ 208,727
Nonutility 292,652 615,397
Total operating revenues 444,258 824,124
OPERATING EXPENSES    
Gas Purchases - Utility 46,665 84,263
Gas Purchases - Nonutility 254,088 472,971
Gas Purchases - Related parties 2,074 3,264
Operation and maintenance 46,233 44,759
Regulatory rider expenses 9,628 21,463
Depreciation and amortization 16,482 14,386
Energy and other taxes 9,637 14,321
Total operating expenses 384,807 655,427
OPERATING INCOME 59,451 168,697
Other income (expense), net 1,924 (110)
Interest expense, net of capitalized interest 6,777 7,195
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES 54,598 161,392
Income tax provision 8,357 40,867
Equity in earnings of affiliates 2,406 2,795
NET INCOME $ 48,647 $ 123,320
EARNINGS PER COMMON SHARE    
Basic (usd per share) $ 0.57 $ 1.46
Diluted (usd per share) [1] 0.56 1.44
DIVIDENDS DECLARED PER COMMON SHARE (usd per share) $ 0.24 $ 0.225
WEIGHTED AVERAGE SHARES OUTSTANDING    
Basic (in shares) 85,675 84,552
Diluted (in shares) 86,676 85,574
[1] There were no anti-dilutive shares excluded from the calculation of diluted earnings per share for the three months ended December 31, 2015, and 2014.