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Other Income (Expense), Net
 12 Months Ended
Dec. 31, 2018
Other Income and Expenses [Abstract]  
Other Income (Expense), Net
13. OTHER INCOME (EXPENSE), NET
The major changes in the components of Other income (expense), net for the years ended December 31 were as follows (in thousands):
 
 
 
2018
 
 
2017
 
 
2016
 
Rental income
 
$
792
 
 
$
792
 
 
$
462
 
Foreign currency (losses) gains, net
 
 
(260
)
 
 
323
 
 
 
(268
)
Interest income
 
 
257
 
 
 
124
 
 
 
68
 
Gain (loss) on disposal of equipment
 
 
57
 
 
 
14
 
 
 
(4
)
Credit gains on available-for-sale securities
 
 
7
 
 
 
11
 
 
 
13
 
Other
 
 
21
 
 
 
(2
)
 
 
13
 
 
 
$
874
 
 
$
1,262
 
 
$
284
 
 
During the second quarter of 2016, the Company began recognizing rental income under a leasing agreement with a third party for its facility in Sunnyvale, California.