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Settlement with French Tax Authorities (Details Textual) - USD ($)
$ in Thousands
1 Months Ended
Aug. 30, 2016
Jun. 30, 2016
Dec. 31, 2015
Accrued Income Taxes, Current   $ 6,441 $ 7,359
Scenario, Forecast [Member]      
Tax Adjustments, Settlements, and Unusual Provisions $ 6,900    
Settlement with Taxing Authority [Member]      
Accrued Income Taxes, Current   $ 1,900