SELECTED QUARTERLY INFORMATION (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2014

SELECTED QUARTERLY INFORMATION (UNAUDITED)

Summary of quarterly results

The following is a summary of quarterly results for 2014 and 2013 (dollars in thousands except per share amounts):

	Quarters
Quarterly Results for 2014	First		Second		Third		Fourth
Operating revenues(1)	$	179,673	$	149,782	$	171,512	$	151,363
Operating income	$	29,488	$	19,502	$	31,709	$	19,300
Net Income	$	20,905	$	11,194	$	23,892	$	11,112
Basic and Diluted Earnings Per Share	$	0.48	$	0.26	$	0.55	$	0.26

(1) Operating revenue for the first, second, third and fourth quarters of 2014 include SPP IM net revenues of $6.2 million, $16.5 million, $11.5 million, and $7.5 million, respectively.

	Quarters
Quarterly Results for 2013	First		Second		Third		Fourth
Operating revenues	$	151,140	$	136,646	$	157,486	$	149,058
Operating income	$	21,858	$	21,110	$	32,896	$	23,799
Net Income	$	12,630	$	11,658	$	23,996	$	15,162
Basic and Diluted Earnings Per Share	$	0.30	$	0.27	$	0.56	$	0.35