Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share

Schedule of computation of basic and diluted earnings per share

	Three Months Ended
(Dollars and shares in thousands, except for per share amounts)	2018		2017
Basic earnings per common share:
Net income	$	42,326	$	18,264
Weighted-average basic common shares		36,646		28,892
Basic earnings per common share	$	1.15	$	0.63
Diluted earnings per share:
Net income	$	42,326	$	18,264
Weighted-average basic common shares		36,646		28,892
Effect of dilutive securities		253		267
Weighted-average dilutive shares		36,899		29,159
Diluted earnings per common share	$	1.15	$	0.63

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

	Three Months Ended March 31,
(Dollars in thousands)	2018					2017
Number of shares					61,272					34,712
Range of exercise prices	$	91.05	to	$	91.35	$	69.48	to	$	91.35