XML 12 R17.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Basis of Presentation (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Basis of Presentation |
Reconciliation of basic weighted average shares outstanding and diluted weighted average shares outstanding | The following table sets forth the reconciliation of basic weighted average shares outstanding and diluted weighted average shares outstanding (in thousands):
|  | Three months ended |
|  | March 31, |
|  | 2013 |  | 2012 |
Basic weighted average shares outstanding |  | 38,716 |  | 38,261 |
Dilutive effect of stock options and restricted stock |  | — |  | 602 |
Diluted weighted average shares outstanding |  | 38,716 |  | 38,863 |

X
- Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration