Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable (Details Textual)

v3.20.1
Accounts Receivable (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Accounts Receivable (Textual)    
Bad debt (recovery) expense $ 0 $ 0