| 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: Cash and Cash Equivalents, at Carrying Value |
| Filer taxonomy standard label: | Cash and cash equivalents |
| Documentation: | Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation). |
| Balance type: | Debit |
| Period type: | As of (instant) |
| Report element type: | [Concept] |
| Data type: | Monetary (xbrli:monetaryItemType) |
| ID: | us-gaap_CashAndCashEquivalentsAtCarryingValue |
| Name: | us-gaap:CashAndCashEquivalentsAtCarryingValue |
| 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) | Cash and cash equivalents, ending balance | en-US |
| Period start label (http://www.xbrl.org/2003/role/periodStartLabel) | Cash and cash equivalents, beginning balance | en-US |
| Standard label (http://www.xbrl.org/2003/role/label) | Cash and cash equivalents | en-US |
| References of Report Element, FASB Accounting Standards Codification: |
| Publisher, Name: | Topic | Sub Topic | Glossary | URI |
| FASB, Accounting Standards Codification | Cash | http://asc.fasb.org/extlink&oid=6506951 | ||
| FASB, Accounting Standards Codification | Cash Equivalents | http://asc.fasb.org/extlink&oid=6507016 | ||
| FASB, Accounting Standards Codification | 210 | 10 | http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 | |
| FASB, Accounting Standards Codification | 210 | 10 | http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765 | |
| FASB, Accounting Standards Codification | 230 | 10 | http://asc.fasb.org/extlink&oid=6943989&loc=d3e3044-108585 |
| References of Report Element, SEC Regulation S-X (SX): |
| Publisher, Name: | Number | Section | Paragraph | Subparagraph | Article |
| SEC, Regulation S-X (SX) | 210 | 02 | 1 | 5 |
| References of Report Element, US GAAP Legacy: |
| Publisher: | Name | Number | Chapter | Section | Paragraph | Subparagraph | Article | Clause | Appendix |
| FASB | Statement of Financial Accounting Standard (FAS) | 95 | 8, 9 | ||||||
| FASB | Statement of Financial Accounting Standard (FAS) | 95 | 7 | ||||||
| FASB | Statement of Financial Accounting Standard (FAS) | 95 | 7, 26 |