Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings Per Share

	Three Months Ended March 31,
	2015		2014
	(in thousands, except share and per share amounts)
Basic EPS:
Net income available to common shareholders - basic	$	15,130	$	10,549
Basic weighted average common shares		18,847,792		18,531,926
Basic earnings per common share	$	0.80	$	0.57
Diluted EPS:
Net income available to common shareholders - diluted	$	15,130	$	10,549
Diluted weighted average common shares:
Weighted average common shares		18,847,792		18,531,926
Stock options and performance shares		199,687		353,003
Diluted weighted average common shares		19,047,479		18,884,929
Diluted earnings per common share	$	0.79	$	0.56