Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Value-added tax assessments and other civil litigation
item
Jun. 30, 2013
Non-income Tax Contingencies
Dec. 31, 2012
Non-income Tax Contingencies
Commitments and contingencies      
Provision for losses $ 0    
Future payments related to value-added tax assessments and other civil litigation, minimum 0    
Future payments related to value-added tax assessments and other civil litigation, maximum 1,000    
Minimum number of claims that the Company's insurance coverage may not be sufficient to cover 1    
Accrued liabilities   $ 5,641 $ 6,207