Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share

Schedule of computation of basic and diluted earnings per share

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(Dollars and shares in thousands, except for per share amounts)	2019		2018		2019		2018
Basic earnings per common share:
Net income	$	51,565	$	47,082	$	137,392	$	129,867
Weighted-average basic common shares		34,057		36,645		34,859		36,657
Basic earnings per common share	$	1.51	$	1.28	$	3.94	$	3.53
Diluted earnings per share:
Net income	$	51,565	$	47,082	$	137,392	$	129,867
Weighted-average basic common shares		34,057		36,645		34,859		36,657
Effect of dilutive securities		243		248		210		252
Weighted-average dilutive shares		34,300		36,893		35,069		36,909
Diluted earnings per common share	$	1.50	$	1.28	$	3.92	$	3.52

Schedule of anti-dilutive securities excluded from computation of diluted earnings per common share

	Three Months Ended September 30,										Nine Months Ended September 30,
(Dollars in thousands)	2019					2018					2019					2018
Number of shares					62,235					62,235					63,313					62,235
Range of exercise prices	$	87.30	to	$	91.35	$	87.30	to	$	91.35	$	69.48	to	$	91.35	$	87.30	to	$	91.35