The Compasny and liquidity (Reverse Stock Split) (Narrative) (Details)	12 Months Ended
Dec. 31, 2011
Compasny And Liquidity Reverse Stock Split Narrative Details
Reverse stock split exchange ratio	0.125

This item represents the conversion ratio used in the calculation of a stock split.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Stock Split

-URI http://asc.fasb.org/extlink&oid=6525746

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 4

-Subparagraph (SAB TOPIC 4.C)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770

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Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration