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Long-Term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Long Term Debt [Line Items]    
Obligations under borrowing arrangements $ 114,871 $ 94,198
Less: Current portion of long-term debt and other current borrowings 58,217 54,925
Long-term debt $ 56,654 $ 39,273