Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

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)	2018		2017		2018		2017
Basic earnings per common share:
Net income	$	47,082	$	35,046	$	129,867	$	85,133
Weighted-average basic common shares		36,645		29,115		36,657		29,023
Basic earnings per common share	$	1.28	$	1.20	$	3.53	$	2.92
Diluted earnings per share:
Net income	$	47,082	$	35,046	$	129,867	$	85,133
Weighted-average basic common shares		36,645		29,115		36,657		29,023
Effect of dilutive securities		248		270		252		268
Weighted-average dilutive shares		36,893		29,385		36,909		29,291
Diluted earnings per common share	$	1.28	$	1.19	$	3.52	$	2.90

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)	2018					2017					2018					2017
Number of shares					62,235					34,712					62,235					34,712
Range of exercise prices	$	87.30	to	$	91.35	$	69.48	to	$	91.35	$	87.30	to	$	91.35	$	69.48	to	$	91.35