OTHER CURRENT AND LONG-TERM LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accrued compensation	$ 9,628	$ 8,059
Accounts receivable credits	2,590	3,571
Advertiser obligations	2,540	1,102
Accrued interest payable	1,828	3,587
Other	4,637	3,284
Total other current liabilities	$ 21,223	$ 19,603