| Report Element Information |
| Run date/time: 6/5/2011 7:34:39 AM |
| Report Element Attributes: |
| Report element from taxonomy prefix: | us-gaap |
| US GAAP taxonomy standard label: | us-gaap: Advertising Barter Transactions [Member] |
| Filer taxonomy standard label: | Advertising Barter Transactions [Member] |
| Documentation: | Transactions in which there is a nonmonetary exchange of advertising, or the rights to place advertising, advertising is swapped for equal amounts of cash, or advertising is exchanged for other goods and services. |
| Balance type: | |
| Period type: | For Period (duration) |
| Report element type: | [Member] |
| Data type: | [Member] (nonnum:domainItemType) |
| ID: | us-gaap_AdvertisingBarterTransactionsMember |
| Name: | us-gaap:AdvertisingBarterTransactionsMember |
| 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) | Advertising Barter Transactions [Member] | 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 |
| FASB | Emerging Issues Task Force (EITF) | 99-17 | 1, 4, 8 |