XML 38 R24.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Earnings Per Share | 12 Months Ended
--- | ---
Dec. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | E ARNINGS P ER S HARE The components of the calculation of earnings per share were as follows:
| 2017 |  | 2016 |  | 2015
| (Dollars and shares in thousands)
Net income | $ | 269,659 |  |  | $ | 153,351 |  |  | $ | 172,413 |
Weighted average number of shares used in: |  |  |  |  |
Basic earnings per share | 110,353 |  |  | 119,732 |  |  | 122,042 |
Dilutive common stock equivalents: |  |  |  |  |
Restricted stock units | 1,010 |  |  | 766 |  |  | 570 |
Diluted earnings per share | 111,363 |  |  | 120,498 |  |  | 122,612 |

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration