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 restricted stock awards were vested, using the treasury stock method.

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



	Three Months ended			Nine Months ended
(Dollars in thousands, except per share data)	September 30, 2017		September 30, 2016	September 30, 2017	September 30, 2016
Net income available to common stockholders, basic and diluted	$	36,479	30,957	101,421	90,090
Average outstanding shares - basic	78,004,450		76,288,640	77,379,514	76,195,550
Add: dilutive restricted stock awards	61,492		62,233	63,430	51,501
Average outstanding shares - diluted	78,065,942		76,350,873	77,442,944	76,247,051
Basic earnings per share	$	0.47	0.40	1.31	1.18
Diluted earnings per share	$	0.47	0.40	1.31	1.18

There were 0 and 10,677 restricted stock awards excluded from the diluted average outstanding share calculation for the nine months ended September 30, 2017 and 2016, respectively. Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock award exceeds the market price of the Company’s stock.