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Disclosure - Schedule II Valuation and Qualifying Accounts (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Allowance for doubtful accounts
     
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period $ 8,820 $ 12,235 $ 18,849
Additions - (credited) to costs and expenses 469 (233) (3,124)
Additions - charged to other accounts 7,930 111 17
Write-offs net of recoveries (1,373) (2,611) (4,253)
Translation adjustment (941) (682) 746
Balance at end of period 14,905 8,820 12,235
Inventory valuation reserves
     
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 35,469 31,932 28,389
Additions - (credited) to costs and expenses 3,325 6,590 5,883
Additions - charged to other accounts 697 760 80
Write-offs net of recoveries (3,924) (3,652) (3,610)
Translation adjustment (463) (161) 1,190
Balance at end of period 35,104 35,469 31,932
Deferred tax asset valuation allowance
     
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 93,054 51,809 36,741
Additions - (credited) to costs and expenses (22,400) 47,304 13,419
Additions - charged to other accounts 2,174 0 0
Write-offs net of recoveries 0 0 0
Translation adjustment (1,070) (6,059) 1,649
Balance at end of period $ 71,758 $ 93,054 $ 51,809