Quarterly Results of Operations

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)



(In thousands, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2012:
Operating revenues	$	498,376	$	521,812	$	506,504	$	509,694
Operating income	35,402		51,113		41,805		43,124
Net income	21,245		30,680		25,128		25,981
Basic earnings per share	0.29		0.42		0.34		0.36
Diluted earnings per share	0.29		0.42		0.34		0.35



(In thousands, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2011:
Operating revenues	$	469,429	$	515,897	$	509,587	$	507,937
Operating income	27,442		46,767		50,066		49,399
Net income	16,293		27,518		29,578		29,368
Basic earnings per share	0.22		0.38		0.41		0.40
Diluted earnings per share	0.22		0.38		0.40		0.40

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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