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Financial Assets at Fair Value Through Profit or Loss (Tables)
 12 Months Ended
Dec. 31, 2018
Financial assets at fair value through profit or loss [abstract]  
Disclosure of detailed information about financial assets at fair value through profit or loss [Text Block]
Following is a summary of financial assets at fair value through profit or loss as of January 1, 2017, December 31, 2017 and 2018:
 
 
 
January 1,
2017
 
 
December 31,
2017
 
 
December 31,
2018
 
 
 
(in thousands)
 
Money market fund
 
$
5,017
 
 
 
521
 
 
 
-
 
Equity securities-unlisted company
 
 
10,562
 
 
 
1,600
 
 
 
9,768
 
 
 
$
15,579
 
 
 
2,121
 
 
 
9,768
 
Current
 
$
5,017
 
 
 
521
 
 
 
-
 
Non-current
 
 
10,562
 
 
 
1,600
 
 
 
9,768
 
 
 
$
15,579
 
 
 
2,121
 
 
 
9,768