| Report Element Information |
| Run date/time: 6/5/2011 7:34:42 AM |
| Report Element Attributes: |
| Report element from taxonomy prefix: | us-gaap |
| US GAAP taxonomy standard label: | us-gaap: Treasury Stock, Value |
| Filer taxonomy standard label: | Treasury Stock, Value |
| Documentation: | The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. |
| Balance type: | Debit |
| Period type: | As of (instant) |
| Report element type: | [Concept] |
| Data type: | Monetary (xbrli:monetaryItemType) |
| ID: | us-gaap_TreasuryStockValue |
| Name: | us-gaap:TreasuryStockValue |
| Labels of Report Element: (Labels from filer taxonomy, does not include other labels) |
| Role: | Label | Lang |
| Period end label (http://www.xbrl.org/2003/role/periodEndLabel) | Treasury Stock, Value, Ending Balance | en-US |
| Period start label (http://www.xbrl.org/2003/role/periodStartLabel) | Treasury Stock, Value, Beginning Balance | en-US |
| Standard label (http://www.xbrl.org/2003/role/label) | Treasury Stock, Value | en-US |
| Verbose label (http://www.xbrl.org/2003/role/verboseLabel) | Treasury stock, share value $1, 10,000 shares, restrictions are Cursus est ullamcorper vel sollicitudin lacus | en-US |
| Negated label (http://www.xbrl.org/2009/role/negatedLabel) | Treasury stock, share value $1, 10,000 shares, restrictions are Cursus est ullamcorper vel sollicitudin lacus | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| FASB, Accounting Standards Codification | 505 | 30 | http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 |
| 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 | FASB Technical Bulletin (FTB) | 85-6 | 3 |