| 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: Nonmonetary Transaction, Amount of Barter Transaction |
| Filer taxonomy standard label: | Nonmonetary Transaction, Amount of Barter Transaction |
| Documentation: | The amount of revenue and expenses for the services received and provided in a nonmonetary arrangement. |
| Balance type: | Credit |
| Period type: | For Period (duration) |
| Report element type: | [Concept] |
| Data type: | Monetary (xbrli:monetaryItemType) |
| ID: | us-gaap_NonmonetaryTransactionAmountOfBarterTransaction |
| Name: | us-gaap:NonmonetaryTransactionAmountOfBarterTransaction |
| 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) | Nonmonetary Transaction, Amount of Barter Transaction | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| FASB, Accounting Standards Codification | 605 | 20 | http://asc.fasb.org/extlink&oid=6406959&loc=d3e49171-111630 |
| 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 | Emerging Issues Task Force (EITF) | 99-17 | 8 |