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Debt - Schedule of Long Term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Jan. 23, 2017
Debt Disclosure [Abstract]      
Revolving lines of credit $ 13,152 $ 638  
Capital lease 417 245  
Unsecured senior note 210,000 210,000 $ 210,000
Other loans 18,319 20,293  
Less: Deferred cost of Financing (5,899) (6,918)  
Total obligations under borrowing arrangements 235,989 224,258  
Less: Current portion of long-term debt and other current borrowings 16,069 3,260  
Long-term debt $ 219,920 $ 220,998