PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 155,438		$ 155,438		$ 156,302
Accumulated depreciation	(93,928)		(93,928)		(87,041)
Property, plant and equipment, net	61,510		61,510		69,261	[1]
Depreciation expense	3,800	$ 4,800	11,900	$ 10,100
Land [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	2,230		2,230		3,293
Buildings and Improvements [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	28,507		28,507		31,067
Machinery and Equipment [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	118,530		118,530		117,178
Construction in Progress [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 6,171		$ 6,171		$ 4,764

[1] Revised