PREPAID EXPENSES AND OTHER ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
PREPAID EXPENSES AND OTHER ASSETS
Prepaid sales and marketing expenses	$ 2,490	$ 3,434
Prepaid insurance	803	1,124
Other prepaid expenses and assets	2,042	4,872
Total	$ 5,335	$ 9,430