OTHER CURRENT LIABILITIES (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Other Liabilities, Current [Abstract]
Accrued legal	$ 2,993	$ 2,202
Income taxes payable	72	219
Other current liabilities	981	1,475
Total other current liabilities	$ 4,046	$ 3,896