OTHER PREPAID EXPENSES AND CURRENT ASSETS (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
OTHER PREPAID EXPENSES AND CURRENT ASSETS [Abstract]
Prepaid insurance	$ 377	$ 300
Prepaid fees	733	719
Notes receivable	507	451
Other prepaid expenses and current assets	650	1,701
Prepaid expenses and other assets	$ 2,267	$ 3,171