PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Property, plant and equipment
Property, plant and equipment, gross	$ 64,955		$ 64,955		$ 57,180
Less accumulated depreciation	(26,458)		(26,458)		(21,865)
Property, plant and equipment, net	38,497		38,497		35,315
Depreciation expense	1,657	$ 1,226	4,900	$ 3,569
Land
Property, plant and equipment
Property, plant and equipment, gross	976		976		970
Building and improvements
Property, plant and equipment
Property, plant and equipment, gross	9,961		9,961		9,771
Machinery, equipment, tools and dies
Property, plant and equipment
Property, plant and equipment, gross	43,484		43,484		37,782
Furniture, fixtures and other
Property, plant and equipment
Property, plant and equipment, gross	$ 10,534		$ 10,534		$ 8,657