Note 8 - Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

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

	Six Months Ended June 30,				Three Months Ended June 30,
(dollars and shares in thousands, except per share data)	2015		2014		2015		2014
Basic:
Net income available to common shareholders	$	39,997	$	25,160	$	20,759	$	12,802
Average common shares outstanding		32,231		25,955		33,367		25,982
Basic net income per common share	$	1.24	$	0.97	$	0.62	$	0.49
Diluted:
Net income available to common shareholders	$	39,997	$	25,160	$	20,759	$	12,802
Average common shares outstanding		32,231		25,955		33,367		25,982
Adjustment for common share equivalents		664		645		631		647
Average common shares outstanding-diluted		32,895		26,600		33,998		26,629
Diluted net income per common share	$	1.22	$	0.95	$	0.61	$	0.48
Anti-dilutive shares		13		21		13		21