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Income Taxes - Summary of Net Operating Loss Carryforwards and Tax Credit Carryforwards (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Income Taxes [Line Items]  
Net operating loss carryforwards $ 220,586
Tax Credit Carryforwards 53,022
United States [Member]
  
Income Taxes [Line Items]  
Net operating loss carryforwards 120,233
Tax Credit Carryforwards 34,172
Netherlands [Member]
  
Income Taxes [Line Items]  
Net operating loss carryforwards 54,900
Australia [Member]
  
Income Taxes [Line Items]  
Net operating loss carryforwards 18,359
Germany [Member]
  
Income Taxes [Line Items]  
Net operating loss carryforwards 16,781
Other Country [Member]
  
Income Taxes [Line Items]  
Net operating loss carryforwards 10,313
Canada [Member]
  
Income Taxes [Line Items]  
Tax Credit Carryforwards $ 18,850