Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Components of Calculation of Earnings Per Share

The components of the calculation of earnings per share were as follows:

	2014		2013		2012
	(Dollars and shares in thousands)
Net income	$	182,391	$	185,413	$	151,346
Weighted average number of shares used in:
Basic earnings per share	63,426		64,254		69,571
Dilutive common stock equivalents:
Stock options and restricted stock units	319		404		318
Diluted earnings per share	63,745		64,658		69,889