Accounts Receivable (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Accounts receivable under normal 30 day terms	$ 1,649,695	$ 2,165,820
Financed contracts:
Current portion of long-term	1,086,820	866,494
Long-term, net of current portion	2,253,667	1,030,354
Total accounts receivable	4,990,182	4,062,668
Less allowance for doubtful accounts	(198,623)	(165,840)
Accounts receivable, net	4,791,559	3,896,828
Presented on the balance sheet as:
Accounts receivable, net	2,537,892	2,866,474
Long-term accounts receivable - financed contracts	$ 2,253,667	$ 1,030,354