Income Taxes Tax Years Open to Examination (Details)	6 Months Ended
Jun. 30, 2011
One hundred percent valuation allowance	100.00%
Domestic country \| Minimum
Income tax examination year	2007
Open tax years	2009
Domestic country \| Maximum
Income tax examination year	2008
State and local jurisdiction \| Minimum
Open tax years	1999
Foreign country \| Minimum
Open tax years	2003

Identification, by major jurisdiction, of tax years that remain open to examination under enacted tax laws.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 48
-Paragraph 21
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration