Note 5 - Net Income per Common Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

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

	Nine Months Ended September 30,				Three Months Ended September 30,
(dollars and shares in thousands, except per share data)	2013		2012		2013		2012
Basic:
Net income available to common shareholders	$	34,579	$	24,666	$	11,615	$	9,533
Average common shares outstanding		25,689		22,538		25,784		23,158
Basic net income per common share	$	1.35	$	1.09	$	0.45	$	0.41
Diluted:
Net income available to common shareholders	$	34,579	$	24,666	$	11,615	$	9,533
Average common shares outstanding		25,689		22,538		25,784		23,158
Adjustment for common share equivalents		615		578		642		609
Average common shares outstanding-diluted		26,304		23,116		26,426		23,767
Diluted net income per common share	$	1.31	$	1.07	$	0.44	$	0.40
Anti-dilutive shares		101,466		130,616		95,966		130,616