Registration of securities issued in business combination transactions

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

v3.21.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2020
shares
Jun. 30, 2021
USD ($)
segment
shares
Jun. 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 $ 14,884,643   $ 14,884,643   $ 13,092,484 $ 13,928,504
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
Share-based Payment Arrangement, Option [Member]            
Shares not included in the computation of diluted earnings per share | shares 328,229 614,114 421,208 634,114 697,201 860,539
Deferred Stock Awards [Member]            
Shares not included in the computation of diluted earnings per share | shares         110,308 178,278