Note 19 - Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2015

Notes to Financial Statements

Quarterly Financial Information [Text Block]

19

. Quarterly Financial Data (Unaudited)

The following is a summary of the quarterly results of operations for 2015 and 2014:

20 15 Quarters (In thousands, except per share amounts)	First		Second		Third		Fourth
Operating revenue	$	161,287	$	163,588	$	171,346	$	168,773
Operating income		17,311		14,161		14,354		15,237
Net income		10,188		8,357		8,410		8,790
Basic earnings per common share		0.30		0.25		0.25		0.26
Diluted earnings per common share		0.30		0.25		0.25		0.26

2014 Quarters ( In thousands, except per share amounts)	First		Second		Third		Fourth
Operating revenue	$	159,409	$	168,423	$	171,550	$	173,547
Operating income		8,640		12,932		13,042		16,392
Net income		5,287		7,926		7,652		8,969
Basic earnings per common share		0.16		0.24		0.23		0.27
Diluted earnings per common share		0.16		0.24		0.23		0.27

The sum of the basic earnings per common share for the 2015 quarters is less than the basic earnings per common share for 2015, and the sum of the basic and diluted earnings per common share for the 2014 quarters exceeds the basic and diluted earnings per common share for 2014 due to differences in rounding.