SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment
Property, plant and equipment	$ 90,621	$ 72,914
Impairment of assets to be disposed of	0	0	0
Impairment of long-lived assets held for use	0	0	0
Land
Property, Plant and Equipment
Property, plant and equipment	2,792	2,249
Buildings and improvements
Property, Plant and Equipment
Property, plant and equipment	24,203	22,212
Buildings and improvements | Minimum
Property, Plant and Equipment
Estimated useful life	15 years
Buildings and improvements | Maximum
Property, Plant and Equipment
Estimated useful life	30 years
Manufacturing equipment and tooling
Property, Plant and Equipment
Property, plant and equipment	39,073	33,409
Manufacturing equipment and tooling | Minimum
Property, Plant and Equipment
Estimated useful life	3 years
Manufacturing equipment and tooling | Maximum
Property, Plant and Equipment
Estimated useful life	15 years
Furniture, fixtures and computer equipment
Property, Plant and Equipment
Property, plant and equipment	7,148	6,741
Furniture, fixtures and computer equipment | Minimum
Property, Plant and Equipment
Estimated useful life	3 years
Furniture, fixtures and computer equipment | Maximum
Property, Plant and Equipment
Estimated useful life	10 years
Other
Property, Plant and Equipment
Property, plant and equipment	3,534	2,257
Other | Minimum
Property, Plant and Equipment
Estimated useful life	3 years
Other | Maximum
Property, Plant and Equipment
Estimated useful life	10 years
Construction in process
Property, Plant and Equipment
Property, plant and equipment	$ 13,871	$ 6,046