Note 23 - Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Quarterly Financial Information [Table Text Block]

	Interest		Net Interest		Net		Earnings per Share
	Income		Income		Income		Basic		Diluted
2017
First quarter	$	28,704,000	$	25,509,000	$	7,615,000	$	0.46	$	0.46
Second quarter		30,903,000		27,193,000		7,343,000		0.45		0.45
Third quarter		33,034,000		28,644,000		8,337,000		0.51		0.51
Fourth quarter		32,902,000		28,402,000		7,979,000		0.48		0.48
2016
First quarter	$	28,889,000	$	25,882,000	$	8,549,000	$	0.52	$	0.52
Second quarter		30,147,000		27,100,000		7,434,000		0.46		0.46
Third quarter		29,706,000		26,450,000		7,845,000		0.48		0.48
Fourth quarter		29,715,000		26,435,000		8,085,000		0.49		0.49