Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition and Reserve for Sales Returns and Allowances (Details Narrative)

v3.20.1
Revenue Recognition and Reserve for Sales Returns and Allowances (Details Narrative) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Revenue recognition reserve for sales returns and allowances $ 13,000 $ 13,000
Minimum [Member] | Revenue [Member]    
Concentration risk, percentage 2.00%  
Maximum [Member] | Revenue [Member]    
Concentration risk, percentage 5.00%