Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share

Schedule of computation of basic and diluted earnings per share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(Dollars and shares in thousands, except for per share amounts)	2019		2018		2019		2018
Basic earnings per common share:
Net income	$	41,460	$	40,459	$	85,827	$	82,785
Weighted-average basic common shares		35,089		36,677		35,268		36,657
Basic earnings per common share	$	1.18	$	1.10	$	2.43	$	2.25
Diluted earnings per share:
Net income	$	41,460	$	40,459	$	85,827	$	82,785
Weighted-average basic common shares		35,089		36,677		35,268		36,657
Effect of dilutive securities		211		252		193		253
Weighted-average dilutive shares		35,300		36,929		35,461		36,910
Diluted earnings per common share	$	1.17	$	1.09	$	2.42	$	2.24

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

	Three Months Ended June 30,										Six Months Ended June 30,
(Dollars in thousands)	2019					2018					2019					2018
Number of shares					63,313					61,272					63,313					61,272
Range of exercise prices	$	69.48	to	$	91.35	$	91.05	to	$	91.35	$	69.48	to	$	91.35	$	91.05	to	$	91.35