XML 64 R14.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Earnings Per Share (Notes) | 3 Months Ended
--- | ---
Mar. 31, 2018
Earnings Per Share [Abstract] |
Earnings per share | 9. Earnings Per Share The following is a reconciliation of the shares used to compute basic and diluted earnings per share (in thousands):
|  | Three Months Ended
|  | March 31,
|  | 2018 |  | 2017
Weighted average number of common shares outstanding used to compute basic earnings per share |  | 52,178 |  |  | 52,658 |
Dilutive effect of stock-based awards |  | 653 |  |  | 591 |
Number of shares used to compute diluted earnings per share |  | 52,831 |  |  | 53,249 |
The number of anti-dilutive share equivalents outstanding during the three months ended March 31, 2018 and 2017 was insignificant.

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