Note 4 - Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

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

	Three months ended March 31,
(Dollars in thousands, except share and per share data)	2015		2014
Net income	$	35,980	$	31,259
Weighted-average shares:
Basic weighted-average number of common shares outstanding		79,835,628		79,595,757
Dilutive effect of weighted-average outstanding common share equivalents
Warrants		344,919		298,535
Options		108,457		101,698
Restricted stock units		20,379		43,392
Diluted weighted-average number of common shares outstanding		80,309,383		80,039,382
Average stock options and warrants with anti-dilutive effect		1,670,231		1,985,848
Earnings per common share:
Basic	$	0.45	$	0.39
Diluted	$	0.45	$	0.39