Note 19 - Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Quarterly Financial Information [Table Text Block]

201 8 Quarters ( In thousands, except per share amounts)	First		Second		Third		Fourth
Operating revenue	$	186,960	$	197,024	$	199,649	$	203,961
Operating income		13,594		18,223		18,993		19,538
Net income		10,331		13,702		15,257		15,737
Basic earnings per common share		0.19		0.25		0.28		0.29
Diluted earnings per common share		0.19		0.25		0.28		0.29

201 7 Quarters (In thousands, except per share amounts)	First		Second		Third		Fourth
Operating revenue	$	173,159	$	171,511	$	170,679	$	182,771
Operating income		13,938		15,569		13,022		14,333
Net income		8,214		9,141		7,855		65,074
Net income – excluding deferred income taxes benefit (1)		8,214		9,141		7,855		8,609
Basic earnings per common share		0.15		0.17		0.14		1.19
Basic earnings per common share – excluding deferred income taxes benefit (1)		0.15		0.17		0.14		0.16
Diluted earnings per common share		0.15		0.17		0.14		1.18
Diluted earnings per common share – excluding deferred income taxes benefit (1)		0.15		0.17		0.14		0.16