PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
PREPAID EXPENSES AND OTHER CURRENT ASSETS
Prepaid sales and marketing expenses	$ 1,821	$ 1,767
Prepaid insurance	836	1,182
Other prepaid expenses and assets	1,848	5,302
Total	$ 4,505	$ 8,251