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Restructuring (Schedule of Restructuring Liability) (Details) - Termination and other costs [Member] - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Restructuring Reserve [Roll Forward]    
Beginning balance $ 5,570 $ 3,326
Restructuring charges accrued 1,356 11,162
Payments (3,129) (5,323)
Currency translation/other (290) (378)
Ending balance $ 3,507 $ 8,787