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Other Non-Operating Income (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Other Nonoperating Income (Expense) [Abstract]    
Gain on sale of equity affiliate $ 28,994 $ 0
Foreign exchange gain, net 514 177
Gain on sales of businesses 189 5,907
Gain on sale of a cost method investment 0 2,845
Other, net (346) 258
Total Other Non-Operating Income $ 29,351 $ 9,187