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

PATENT RIGHTS - Summary of Patent Rights (Detail)

v3.21.1
PATENT RIGHTS - Summary of Patent Rights (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 $ 1,778
Additions 97
Amortization (12)
Balance at March 31, 2021 1,863
Cost [Member]  
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 2,130
Additions 97
Amortization
Balance at March 31, 2021 2,227
Accumulated Amortization [Member]  
Disclosure of detailed information about intangible assets [line items]  
Balance at January 1, 2021 (352)
Additions
Amortization (12)
Balance at March 31, 2021 $ (364)