Note 20 - Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Quarterly Financial Information [Text Block]

20. Quarterly Financial Data (Unaudited)

The following is a summary of the quarterly results of operations for 2020 and 2019:

2020 Quarters (In thousands, except per share amounts)	First		Second		Third		Fourth
Operating revenue	$	218,646	$	212,384	$	216,011	$	227,333
Operating income		18,032		25,256		24,400		25,558
Net income		13,718		18,134		18,044		19,604
Basic earnings per common share		0.17		0.22		0.22		0.24
Diluted earnings per common share		0.17		0.22		0.22		0.24

2019 Quarters (In thousands, except per share amounts)	First		Second		Third		Fourth
Operating revenue	$	199,023	$	212,090	$	214,973	$	217,185
Operating income		17,733		19,944		20,034		18,787
Net income		13,546		15,190		16,587		15,748
Basic earnings per common share		0.17		0.19		0.20		0.19
Diluted earnings per common share		0.16		0.18		0.20		0.19

The sum of the basic and diluted earnings per common share for the 2020 quarters exceeds the amount for the year, and the sum of the diluted earnings per common share for the 2019 quarters is less than the amount for the year, due to differences in rounding.