REVENUE AND DEFERRED REVENUE (Details 1) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Short Term
Balance at the beginning of the period	$ 2,850,976
Deferral of revenue	1,141,916	$ 1,208,913
Recognition of unearned revenue	(804,881)	$ (686,881)
Balance at the end of the period	3,188,011
Long Term
Balance at the beginning of the period	875,000
Deferral of revenue	0
Recognition of unearned revenue	0
Balance at the end of the period	$ 875,000