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: Treasury Stock, Shares
Filer taxonomy standard label: Treasury Stock, Shares
Documentation: Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.
Balance type:  
Period type: As of (instant)
Report element type: [Concept]
Data type: Shares (xbrli:sharesItemType)
 
ID: us-gaap_TreasuryStockShares
Name: us-gaap:TreasuryStockShares

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) Treasury Stock, Shares en-US

References of Report Element, FASB Accounting Standards Codification:
Publisher, Name: Topic Sub Topic Glossary URI
FASB, Accounting Standards Codification 210 10 http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

References of Report Element, SEC Regulation S-X (SX):
Publisher, Name: Number Section Paragraph Subparagraph Article
SEC, Regulation S-X (SX) 210 02 29, 30 5

References of Report Element, US GAAP Legacy:
Publisher: Name Number Chapter Section Paragraph Subparagraph Article Clause Appendix