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Restructuring Charges (Schedule Of Accrued Restructuring Balances) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]    
Balance as of December 31, 2012 $ 717  
Restructuring Charges 442 (36)
Cash Payment (316)  
Non-Cash Activity (39)  
Foreign Exchange Adjustments (12)  
Balance as of March 31, 2013 792  
2013 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Restructuring Charges 183  
Cash Payment (183)  
Foreign Exchange Adjustments     
2012 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Balance as of December 31, 2012 704  
Restructuring Charges 313  
Cash Payment (181)  
Non-Cash Activity (39)  
Foreign Exchange Adjustments (18)  
Balance as of March 31, 2013 779  
2011 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Balance as of December 31, 2012 13  
Restructuring Charges (54)  
Cash Payment 48  
Foreign Exchange Adjustments 6  
Balance as of March 31, 2013 13  
Severance [Member] | 2013 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Restructuring Charges 107  
Cash Payment (107)  
Foreign Exchange Adjustments     
Severance [Member] | 2012 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Balance as of December 31, 2012 538  
Restructuring Charges 136  
Cash Payment (156)  
Foreign Exchange Adjustments 76  
Balance as of March 31, 2013 594  
Lease Facility Costs [Member] | 2012 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Restructuring Charges 177  
Non-Cash Activity (39)  
Foreign Exchange Adjustments     
Balance as of March 31, 2013 138  
Lease Facility Costs [Member] | 2011 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Balance as of December 31, 2012 13  
Restructuring Charges (54)  
Cash Payment 48  
Foreign Exchange Adjustments 6  
Balance as of March 31, 2013 13  
Other Exit Costs [Member] | 2013 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Restructuring Charges 76  
Cash Payment (76)  
Foreign Exchange Adjustments     
Other Exit Costs [Member] | 2012 [Member]
   
Restructuring Cost and Reserve [Line Items]    
Balance as of December 31, 2012 166  
Cash Payment (25)  
Foreign Exchange Adjustments (94)  
Balance as of March 31, 2013 $ 47