Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Components of Calculation of Earnings Per Share

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

	2016		2015		2014
	(Dollars and shares in thousands)
Net income	$	153,351	$	172,413	$	182,391
Weighted average number of shares used in:
Basic earnings per share	59,866		61,021		63,426
Dilutive common stock equivalents:
Restricted stock units	383		285		319
Diluted earnings per share	60,249		61,306		63,745