Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Summary of earnings per share

Earnings per share consisted of the following components for the periods indicated:

	Three Months Ended				Six Months Ended
	June 30				June 30
	2019		2018		2019		2018
	(Dollars in thousands, except per share data)
Net income	$	30,628	$	31,118	$	65,853	$	58,673
Weighted Average Shares
Basic shares	34,313,492		27,526,653		31,226,985		27,506,724
Effect of dilutive securities	41,878		54,525		48,381		61,480
Diluted shares	34,355,370		27,581,178		31,275,366		27,568,204
Net income per share
Basic EPS	$	0.89	$	1.13	$	2.11	$	2.13
Effect of dilutive securities	—		—		—		—
Diluted EPS	$	0.89	$	1.13	$	2.11	$	2.13

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

As a result of the anti-dilution, the potential common shares excluded from the calculation of diluted earnings are as follows:

	Three Months Ended		Six Months Ended
	June 30		June 30
	2019	2018	2019	2018
Stock options	—	4,890	—	2,458
Performance-based restricted stock	—	—	11,419	—