Earnings Per Share

12 Months Ended

Dec. 31, 2016

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:



	Years ended
(Dollars in thousands, except per share data)	December 31, 2016		December 31, 2015	December 31, 2014
Net income available to common stockholders, basic and diluted	$	121,131	116,127	112,755
Average outstanding shares - basic	76,278,463		75,542,455	74,641,957
Add: dilutive restricted stock awards	63,373		53,126	45,358
Average outstanding shares - diluted	76,341,836		75,595,581	74,687,315
Basic earnings per share	$	1.59	1.54	1.51
Diluted earnings per share	$	1.59	1.54	1.51

There were no restricted stock awards excluded from the diluted average outstanding share calculation for the years ended December 31, 2016, 2015, and 2014. Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock award exceeds the market price of the Company’s stock.