Quarterly report pursuant to Section 13 or 15(d)

Schedule of Share-based Compensation, Allocation of Recognized Period Costs (Details)

v3.21.2
Schedule of Share-based Compensation, Allocation of Recognized Period Costs (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation $ 42,000 $ 48,000 $ 87,000 $ 92,000
Share-based Payment Arrangement, Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation 33,000 33,000 66,000 65,000
Director Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation $ 9,000 $ 15,000 $ 21,000 $ 27,000