Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Basic and diluted earnings per share

	Three Months ended			Nine Months ended
(Dollars in thousands, except per share data)	September 30, 2013		September 30, 2012	September 30, 2013	September 30, 2012
Net income available to common stockholders, basic and diluted	$	25,628	19,444	69,098	54,758
Average outstanding shares - basic	73,945,523		71,933,141	72,804,321	71,925,664
Add: dilutive stock options and awards	76,348		40,844	65,154	97
Average outstanding shares - diluted	74,021,871		71,973,985	72,869,475	71,925,761
Basic earnings per share	$	0.35	0.27	0.95	0.76
Diluted earnings per share	$	0.35	0.27	0.95	0.76