| Report Element Information |
| Run date/time: 6/5/2011 7:34:40 AM |
| Report Element Attributes: |
| Report element from taxonomy prefix: | us-gaap |
| US GAAP taxonomy standard label: | us-gaap: Income Tax Expense (Benefit) |
| Filer taxonomy standard label: | Income tax expense (benefit) |
| Documentation: | The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. |
| Balance type: | Debit |
| Period type: | For Period (duration) |
| Report element type: | [Concept] |
| Data type: | Monetary (xbrli:monetaryItemType) |
| ID: | us-gaap_IncomeTaxExpenseBenefit |
| Name: | us-gaap:IncomeTaxExpenseBenefit |
| 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) | Income tax expense (benefit) | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| FASB, Accounting Standards Codification | 235 | 10 | http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 | |
| FASB, Accounting Standards Codification | Income Tax Expense (or Benefit) | http://asc.fasb.org/extlink&oid=6515339 | ||
| FASB, Accounting Standards Codification | 740 | 10 | http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 |
| References of Report Element, SEC Regulation S-X (SX): |
| Publisher, Name: | Number | Section | Paragraph | Subparagraph | Article |
| SEC, Regulation S-X (SX) | 210 | 08 | h | 4 |
| References of Report Element, US GAAP Legacy: |
| Publisher: | Name | Number | Chapter | Section | Paragraph | Subparagraph | Article | Clause | Appendix |
| FASB | Statement of Financial Accounting Standard (FAS) | 109 | 45 | a, b |