Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2015
USD ($)
item
Dec. 31, 2014
USD ($)
Value-added tax assessments and other civil litigation    
Commitments and contingencies    
Minimum number of claims that the Company's insurance coverage may not be sufficient to cover | item 1  
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 500  
Non-income Tax Contingencies    
Commitments and contingencies    
Accrued liabilities $ 2,009 $ 2,760