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
 6 Months Ended
Jun. 30, 2021
USD ($)
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 $ 1,778
Additions 142
Balance at June 30, 2021 1,920
Cost [member]  
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 2,130
Additions 183
Balance at June 30, 2021 2,313
Accumulated Amortization [Member]  
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 (352)
Additions (41)
Balance at June 30, 2021 $ (393)