|**Income Taxes (Tables)**                            | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|**Income Taxes [Abstract]**                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Reconciliation of provision for income taxes         | The following is a reconciliation of the provision for income taxes computed at federal statutory rates to the effective rates:For the three months endedFor the nine months endedSeptember 30,September 30,2012201120122011Consolidated tax provision at federal statutory rate35.0%35.0%35.0%35.0%Reversal of tax credits---5.9State income tax provisions, net of federal incometax benefit4.59.63.73.8Tax reserve adjustment(7.1)(91.2)(4.0)(8.1)All other, net0.91.40.10.7Effective tax rate33.3%(45.2%)34.8%37.3%
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|Consolidated tax provision at federal statutory rate |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Reversal of tax credits                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|State income tax provisions, net of federal income   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|tax benefit                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Tax reserve adjustment                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|All other, net                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Effective tax rate                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
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                    duration X- DefinitionTabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319+ Details**Name:**
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