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Debt - Schedule of Long Term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 02, 2019
Dec. 31, 2018
Debt Disclosure [Abstract]      
Revolving lines of credit $ 25,601   $ 19,146
Finance lease 344 $ 380 380
Unsecured senior note 210,000   210,000
Other loans 16,698   17,804
Less: Deferred cost of financing (4,746)   (5,015)
Total obligations under borrowing arrangements 247,896   242,315
Less: Current portion of long-term debt and other current borrowings 28,048   21,606
Long-term debt $ 219,848   $ 220,709