OTHER CURRENT LIABILITIES (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other Liabilities, Current [Abstract]
Accrued legal	$ 2,182	$ 2,202
Income taxes payable	118	219
Other current liabilities	996	1,475
Total other current liabilities	$ 3,296	$ 3,896