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Other Income, net (Tables)
12 Months Ended
Dec. 31, 2017
Other Nonoperating Income (Expense) [Abstract]  
Other Income, net
Other Income, net consists of the following:

Year ended December 31,

2017
 
2016
 
2015
Interest and dividend income
$
1,625

 
$
1,673

 
$
2,904

Gain on mutual fund investments
8,766

 
8,087

 
3,902

Change in fair value of earn-out consideration

 
4,060

 

Other, net
1,468

 
1,588

 
221

Other income, net
$
11,859

 
$
15,408

 
$
7,027