Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details 1)

v3.20.1
Revenue Recognition (Details 1) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Increase (decrease) $ 1,050,684 $ 181,544
Customer Deposit Liability [Member]    
Opening balance 2,503,785 516,038
Closing balance 3,554,469 697,582
Increase (decrease) 1,050,684 181,544
Trade Accounts Receivable [Member]    
Opening balance 4,455,209 862,397
Closing balance 4,575,300 1,077,706
Increase (decrease) $ 120,091 $ 215,309