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OTHER INCOME
 12 Months Ended
Dec. 31, 2019
Other Income and Expenses [Abstract]  
OTHER INCOME, NET OTHER INCOME (EXPENSE)

Other income (expense) consisted of the following for the years set forth below (amounts in thousands):
 
2019
 
2018
 
2017
Gain on Wheels India Limited share sale
$
4,695

 
$
—

 
$
—

Equity investment income
2,394

 
3,993

 
3,615

Building rental income
1,697

 
1,804

 
2,372

Interest income
1,133

 
2,107

 
3,363

Investment gain related to investments for deferred compensation
—

 
687

 
2,725

Other income (expense)
(393
)
 
10,607

 
(2,967
)
 
$
9,526

 
$
19,198

 
$
9,108