XML 50 R20.htm IDEA: XBRL DOCUMENT v2.4.0.6
Basis Of Presentation And Consolidation (Policy)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Basis Of Presentation And Consolidation Policy [Abstract]    
Revenue Recognition  
Cost Of Services (Excluding Depreciation And Amortization)  
Selling, General And Administrative Expenses  
Depreciation And Amortization Expense
 
Income Taxes  
Recent Accounting Developments