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OTHER INCOME (EXPENSE), NET (Tables)
 3 Months Ended
Mar. 31, 2019
Other Income and Expenses [Abstract]  
Schedule of Other Income (Expense), Net
Other income (expense), net consisted of the following (in thousands):
 
 
Three months ended
March 31,
 
 
2019
 
2018
Impairment of and loss on equity securities
 
$
(4,602
)
 
$
103

Allowance on notes receivable
 
(1,237
)
 
—

Loss on sale of equity securities
 
(977
)
 
—

Other
 
544

 
(112
)
Total other income (expense), net
 
$
(6,272
)
 
$
(9
)