Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

PATENT RIGHTS - Summary of Patent Rights (Detail)

v3.21.2
PATENT RIGHTS - Summary of Patent Rights (Detail)
$ in Thousands
 9 Months Ended
Sep. 30, 2021
USD ($)
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 $ 1,778
Additions 188
Balance at September 30, 2021 1,966
Cost [member]  
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 2,130
Additions 268
Balance at September 30, 2021 2,398
Accumulated Amortization [Member]  
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 (352)
Additions (80)
Balance at September 30, 2021 $ (432)