XML 54 R38.htm IDEA: XBRL DOCUMENT v3.21.1
DEFERRED REVENUE (Tables)
12 Months Ended
Dec. 31, 2020
Deferred Revenue [Abstract]  
Summary of Deferred Revenue

Deferred revenue consists of the following:

 

 

December 31

 

(in US$ thousands)

 

2019

 

 

2020

 

Unused virtual points

 

$

999

 

 

$

724

 

Unamortized virtual items

 

 

366

 

 

 

226

 

 

 

$

1,365

 

 

$

950