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Restructuring Charges, Net (Details) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2011
Scenario, Forecast [Member]
Dec. 31, 2011
Scenario, Forecast [Member]
Jun. 30, 2011
Scenario, Forecast [Member]
Dec. 31, 2011
Scenario, Forecast [Member]
Jun. 30, 2011
Headcount In Italy And The Netherlands [Member]
Jun. 30, 2011
Global Headcount [Member]
Restructuring plan staff reduction             23      
Percentage of staff reduction related to restructuring plan                 45.00% 2.00%
Total restructuring charges $ 2,226,000 $ (21,000) $ 2,268,000 $ 98,000       $ 4,100,000    
Employee termination benefits recognized 1,700,000                  
Lease exit costs 500,000             2,400,000    
Expected remaining lease exit costs         1,900,000          
Accrued restructuring costs 2,200,000   2,200,000              
Expected total cash expenditures related to the restructuring plan           $ 4,600,000