Note 15 - Net Income Per Share and Common Stock Dividends (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(In thousands, except per share data)	2016		2015		2014
Net income, basic and diluted	$	41,027	$	37,187	$	34,822
Average shares outstanding, basic		22,356		22,088		21,839
Effect of dilutive securities		436		371		305
Average shares outstanding including dilutive securities		22,792		22,459		22,144
Net income per share, basic	$	1.84	$	1.68	$	1.59
Net income per share, diluted	$	1.80	$	1.65	$	1.57