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LEASES (Details Narrative) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Right-of-use assets $ 3,464,000   $ 3,464,000   $ 493,000
Lease liability 3,462,000   3,462,000   499,000
Lease liability, current $ 404,000   $ 404,000   $ 247,000
Weighted average remaining lease term 13 years 10 days   13 years 10 days    
Operating lease, weighted average discount rate, percent 1.10%   1.10%    
Operating lease expense $ 108,000 $ 76,000 $ 312,000 $ 225,000  
Houston [Member]          
Operating leases term, description     lease term running through October 2024    
Middletown [Member]          
Operating leases term, description     lease term expiring in June 2022    
Banbury [Member]          
Operating leases term, description     In the U.K., the Company leases a facility in Banbury, England, which serves manufacturing, warehousing, and other operational functions. The lease in Banbury was effective April 1, 2006 and had a 15-year term which ended in March 2021. A new lease for Banbury was recently consummated, effective April 1, 2021, with a 15-year term ending in March 2036.