Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2015

Earnings Per Share, Basic, Other Disclosures [Abstract]

Reconciliation of Number of Common Shares Used in Calculating Basic and Diluted EPS

The following table reconciles the number of shares used in calculating the basic and diluted earnings per share for the years ended December 31:

(Dollars in thousands, except per share amounts)	2015		2014		2013
Net income	$	31,714	$	89,910	$	70,581
Basic weighted-average shares outstanding	40,842,126		40,748,924		40,502,878
Incremental shares due to:
Performance shares	122,334		117,830		133,766
Restricted stock units	23,359		27,628		69,076
Stock options	—		—		3,567
Diluted weighted-average shares outstanding	40,987,819		40,894,382		40,709,287
Basic net income per share	$	0.78	$	2.21	$	1.74
Diluted net income per share	$	0.77	$	2.20	$	1.73