Commitments and Contingencies (Details)	3 Months Ended
Mar. 31, 2012
Commitments and Contingencies [Abstract]
Description Of Material Contingencies Of Parent Company	Various claims and lawsuits arising in the normal course of business are pending against us. The results of these proceedings are not expected to have a material adverse effect on our consolidated financial position or results of operations

Description of material contingencies of the registrant unless separately disclosed in the consolidated statements.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph a

-Article 12

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24072-122690

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