PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 154,802		$ 154,802		$ 156,302
Accumulated depreciation	(91,821)		(91,821)		(87,041)
Property, plant and equipment, net	62,981		62,981		69,261	[1]
Depreciation expense	4,000	$ 2,500	8,100	$ 5,300
Land [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	2,228		2,228		3,293
Buildings and Improvements [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	28,790		28,790		31,067
Machinery and Equipment [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	118,508		118,508		117,178
Construction in Progress [Member]
Property, plant and equipment [Abstract]
Property, plant and equipment, gross	$ 5,276		$ 5,276		$ 4,764

[1] Revised