SEGMENT INFORMATION (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Sales	$ 10,833,058	$ 12,169,718
Net income	1,668,618	1,876,228
Long-lived assets	8,276,796		$ 8,020,462
Canada
Segment Reporting Information [Line Items]
Sales	935,638	1,298,832
Net income	(382,040)	(434,667)
Long-lived assets	2,410,736		2,079,173
United States
Segment Reporting Information [Line Items]
Sales	9,897,420	10,870,886
Net income	2,050,658	$ 2,310,895
Long-lived assets	$ 5,866,060		$ 5,941,289