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Other Non-Operating Income (Tables)
 3 Months Ended
Mar. 31, 2017
Other Nonoperating Income (Expense) [Abstract]  
Summary of non-operating income
A summary of non-operating income is as follows:
 
 
Three Months Ended 
 March 31
(in thousands)
 
2017
 
2016
Foreign currency gain (loss), net
 
1,728

 
(5,443
)
(Loss) gain on sales of businesses
 
(342
)
 
18,931

Gain on sales of marketable equity securities
 
—

 
1,754

Other, net
 
(537
)
 
(146
)
Total Other Non-Operating Income
 
$
849

 
$
15,096