Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Basic and diluted earnings per share

	Years ended
(Dollars in thousands, except per share data)	December 31, 2012		December 31, 2011	December 31, 2010
Net income available to common stockholders, basic and diluted	$	75,516	17,471	42,330
Average outstanding shares - basic	71,928,570		71,915,073	69,657,980
Add: dilutive stock options and awards	86		—	2,365
Average outstanding shares - diluted	71,928,656		71,915,073	69,660,345
Basic earnings per share	$	1.05	0.24	0.61
Diluted earnings per share	$	1.05	0.24	0.61