Note 1 - Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands, except per share data)	2017		2016		2017		2016
Net income available to common shareholders	$	28,852	$	23,429	$	74,037	$	69,819
Average common shares outstanding		32,214		30,621		31,797		30,434
Average potential dilutive common shares		210		223		210		223
Average diluted common shares		32,424		30,844		32,007		30,657
Basic earnings per share	$	0.90	$	0.77	$	2.33	$	2.29
Diluted earnings per share (1)	$	0.89	$	0.76	$	2.31	$	2.28