PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Property, plant and equipment
Property, plant and equipment, gross	$ 63,778		$ 63,778		$ 57,180
Less accumulated depreciation	(25,152)		(25,152)		(21,865)
Property, plant and equipment, net	38,626		38,626		35,315
Depreciation expense	1,752	$ 1,198	3,243	$ 2,343
Land
Property, plant and equipment
Property, plant and equipment, gross	974		974		970
Building and improvements
Property, plant and equipment
Property, plant and equipment, gross	9,875		9,875		9,771
Machinery, equipment, tools and dies
Property, plant and equipment
Property, plant and equipment, gross	42,943		42,943		37,782
Furniture, fixtures and other
Property, plant and equipment
Property, plant and equipment, gross	$ 9,986		$ 9,986		$ 8,657