Registration of securities issued in business combination transactions

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

v3.21.4
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)
9 Months Ended 12 Months Ended
Sep. 30, 2021
segment
Sep. 30, 2020
shares
Dec. 31, 2020
USD ($)
segment
$ / shares
shares
Dec. 31, 2019
USD ($)
shares
Number of segments | segment 2   2  
Cash and cash equivalents     $ 13,092,484  
Money market funds     $ 9,424,000  
Value of the investment in short-term money market funds sought to be preserved (in dollars per share) | $ / shares     $ 1.00  
Depreciation     $ 757,000 $ 1,028,000
Product warranty period     5 years  
Research and development costs     $ 2,808,000 3,600,000
Maximum matching percentage by employer     6.00%  
Contributions to the plan     $ 371,000 $ 401,000
Dilutive shares | shares     0 65,163
Shares not included in the computation of diluted earnings per share | shares   727,915    
Share-based Payment Arrangement, Option [Member]        
Shares not included in the computation of diluted earnings per share | shares     697,201 860,539
Deferred Stock Awards [Member]        
Shares not included in the computation of diluted earnings per share | shares     110,308 178,278