| Report Element Information |
| Run date/time: 6/5/2011 7:34:41 AM |
| Report Element Attributes: |
| Report element from taxonomy prefix: | us-gaap |
| US GAAP taxonomy standard label: | us-gaap: Loss Contingencies by Nature of Contingency [Axis] |
| Filer taxonomy standard label: | Loss Contingencies by Nature of Contingency [Axis] |
| Documentation: | Quantifies and describes each loss contingency that exists as of the balance sheet date, by nature of the probable or possible loss incurred. |
| Balance type: | |
| Period type: | |
| Report element type: | [Axis] |
| Data type: | |
| ID: | us-gaap_LossContingenciesByNatureOfContingencyAxis |
| Name: | us-gaap:LossContingenciesByNatureOfContingencyAxis |
| 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) | Loss Contingencies by Nature of Contingency [Axis] | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| FASB, Accounting Standards Codification | 450 | 20 | http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 | |
| FASB, Accounting Standards Codification | 450 | 20 | http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349 | |
| FASB, Accounting Standards Codification | 450 | 20 | http://asc.fasb.org/extlink&oid=6952336&loc=d3e14472-108349 | |
| FASB, Accounting Standards Codification | 450 | 20 | http://asc.fasb.org/extlink&oid=6952336&loc=d3e14394-108349 | |
| FASB, Accounting Standards Codification | 450 | 20 | http://asc.fasb.org/extlink&oid=6952336&loc=d3e14453-108349 | |
| FASB, Accounting Standards Codification | 460 | 10 | http://asc.fasb.org/extlink&oid=6851643&loc=d3e12021-110248 | |
| FASB, Accounting Standards Codification | 460 | 10 | http://asc.fasb.org/extlink&oid=6851643&loc=d3e12053-110248 | |
| FASB, Accounting Standards Codification | 450 | 20 | http://asc.fasb.org/extlink&oid=6952336&loc=d3e14557-108349 | |
| FASB, Accounting Standards Codification | 450 | 20 | http://asc.fasb.org/extlink&oid=6952336&loc=d3e14615-108349 |
| 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 |
| FASB | Statement of Financial Accounting Standard (FAS) | 5 | 4, 9, 10, 11, 12, 22-40 |