PROPERTY AND EQUIPMENT - SCHEDULE OF PROPERTY AND EQUIPMENT (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, total	$ 9,669	$ 9,578
Less accumulated depreciation	(6,031)	(5,562)
Property and equipment, net	3,638	4,016
Computer equipment and purchased software
Property, Plant and Equipment [Line Items]
Property and equipment, total	3,539	3,489
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, total	866	882
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, total	1,295	1,290
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, total	$ 3,969	$ 3,917