Earnings Per Share

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic earnings per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period presented. Diluted earnings per share is computed by including the net increase in shares as if dilutive outstanding stock options were exercised and restricted stock awards were vested, using the treasury stock method.

Basic and diluted earnings per share has been computed based on the following:

	Years ended
(Dollars in thousands, except per share data)	December 31, 2014		December 31, 2013	December 31, 2012
Net income available to common stockholders, basic and diluted	$	112,755	95,644	75,516
Average outstanding shares - basic	74,641,957		73,191,713	71,928,570
Add: dilutive stock options and awards	45,358		68,565	86
Average outstanding shares - diluted	74,687,315		73,260,278	71,928,656
Basic earnings per share	$	1.51	1.31	1.05
Diluted earnings per share	$	1.51	1.31	1.05

There were 0, 38,915 and 879,525 options excluded from the diluted average outstanding share calculation for the years ended December 31, 2014, 2013, and 2012, respectively, due to the option exercise price exceeding the market price of the Company’s common stock.