Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - Deferred Revenue, by Arrangement, Disclosure

v3.21.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - Deferred Revenue, by Arrangement, Disclosure - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Deferred Revenue, by Arrangement, Disclosure [Abstract]    
Deferred revenue-current $ 32 $ 0
Deferred revenue-noncurrent 21 0
Total deferred revenue $ 53 $ 0