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MARKETABLE SECURITIES - NONCURRENT (Tables)
12 Months Ended
Dec. 31, 2021
Marketable Securities [Abstract]  
Summary of Marketable Securities Noncurrent

Marketable securities – noncurrent consist of the following:

 

 

 

December 31

 

(in US$ thousands)

 

2020

 

 

2021

 

Debt securities, classified as available-for-sale

 

$

10,000

 

 

$

8,132

 

Equity securities

 

 

 

 

 

2,190

 

 

 

$

10,000

 

 

$

10,322