| Report Element Information |
| Run date/time: 6/5/2011 7:34:40 AM |
| Report Element Attributes: |
| Report element from taxonomy prefix: | us-gaap |
| US GAAP taxonomy standard label: | us-gaap: Income (Loss) before Cumulative Effect of Change in Accounting Principle (Deprecated 2011-01-31) |
| Filer taxonomy standard label: | Income (Loss) before Cumulative Effect of Change in Accounting Principle |
| Documentation: | This item has been removed as the cumulative effect of a change in accounting principle is no longer included in reporting income. The effective date for this change, in accordance with FAS 154, was for financial statements for years beginning after 2005-12-15 making the element potentially relevant, for basic financial statements, through 2008-12-31. If this element was used in the past, "ProfitLoss" should be used instead. |
| Balance type: | Credit |
| Period type: | For Period (duration) |
| Report element type: | [Concept] |
| Data type: | Monetary (xbrli:monetaryItemType) |
| ID: | us-gaap_IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple |
| Name: | us-gaap:IncomeLossBeforeCumulativeEffectOfChangeInAccountingPrinciple |
| Labels of Report Element: (Labels from filer taxonomy, does not include other labels) |
| Role: | Label | Lang |
| Standard label (http://www.xbrl.org/2003/role/label) | Income (Loss) before Cumulative Effect of Change in Accounting Principle | en-US |
| Total label (http://www.xbrl.org/2003/role/totalLabel) | Income (loss) before cumulative effect of change in accounting principle | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| References of Report Element, SEC Regulation S-X (SX): |
| Publisher, Name: | Number | Section | Paragraph | Subparagraph | Article |
| References of Report Element, US GAAP Legacy: |
| Publisher: | Name | Number | Chapter | Section | Paragraph | Subparagraph | Article | Clause | Appendix |