XML 40 R39.htm IDEA: XBRL DOCUMENT

Inventories (Details Textual) - USD ($)	9 Months Ended
Inventories (Details Textual) - USD ($)	Sep. 30, 2019	Sep. 30, 2018
Inventories (Textual)
Increased (decrease) inventory reserve	$ 3,430,818	$ 0