| 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: Prepaid Expense, Current |
| Filer taxonomy standard label: | Prepaid expenses |
| Documentation: | Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer. |
| Balance type: | Debit |
| Period type: | As of (instant) |
| Report element type: | [Concept] |
| Data type: | Monetary (xbrli:monetaryItemType) |
| ID: | us-gaap_PrepaidExpenseCurrent |
| Name: | us-gaap:PrepaidExpenseCurrent |
| 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) | Prepaid expenses | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| FASB, Accounting Standards Codification | Current Assets | http://asc.fasb.org/extlink&oid=6509628 | ||
| FASB, Accounting Standards Codification | 210 | 10 | http://asc.fasb.org/extlink&oid=6361293&loc=d3e6787-107765 | |
| FASB, Accounting Standards Codification | 210 | 10 | http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765 | |
| FASB, Accounting Standards Codification | 340 | 10 | http://asc.fasb.org/extlink&oid=6386993&loc=d3e5879-108316 |
| 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 |
| AICPA | Accounting Research Bulletin (ARB) | 43 | 3 | A | 4 |