BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES, Advertising Costs (Details) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Selling and Marketing Expenses [Member]
Advertising Costs [Abstract]
Advertising expense	$ 154,000	$ 36,000	$ 210,000	$ 126,000
Advertising Expenses [Member]
Advertising Costs [Abstract]
Advertising expense	$ 1,090,000	$ 855,000	$ 1,940,000	2,590,000
Advertising Expenses [Member] | Discontinued Operations [Member]
Advertising Costs [Abstract]
Advertising expense				$ 56,000