GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Gross Carrying Value
Balance at the beginning of the period			$ 32,274,000
Addition due to acquisition			6,009,000
Balance at the end of the period	38,283,000		38,283,000
Accumulated Impairment Losses
Accumulated impairment losses	(23,777,000)		(23,777,000)		(23,777,000)
Net
Balance at the beginning of the period			8,497,000
Addition due to acquisition			6,009,000
Balance at the end of the period	14,506,000		14,506,000
Amortizable intangible assets
Gross amortizable intangible assets	27,410,000		27,410,000		18,182,000
Accumulated amortization	(7,385,000)		(7,385,000)		(6,793,000)
Amortizable intangible assets, net	20,025,000		20,025,000		11,389,000
Intangible asset not subject to amortization	15,421,000		15,421,000		10,435,000
Intangible assets other than goodwill, net	35,446,000		35,446,000		21,824,000
Amortization expense related to amortizable intangible assets	400,000	200,000	700,000	400,000
Bridgeport | Assets
Amortizable intangible assets
Intangible asset not subject to amortization	7,271,000		7,271,000		7,595,000
Decrease in balance of intangible asset not subject to amortization due to the impact of foreign currency exchange			300,000
Usach and Forkardt | Trade names
Amortizable intangible assets
Intangible asset not subject to amortization	8,150,000		8,150,000		2,840,000
Land rights
Amortizable intangible assets
Gross amortizable intangible assets	2,803,000		2,803,000		2,784,000
Accumulated amortization	(145,000)		(145,000)		(116,000)
Patents
Amortizable intangible assets
Gross amortizable intangible assets	3,023,000		3,023,000		3,006,000
Accumulated amortization	(2,850,000)		(2,850,000)		(2,807,000)
Technical know-how, customer list, and other
Amortizable intangible assets
Gross amortizable intangible assets	21,584,000		21,584,000		12,392,000
Accumulated amortization	$ (4,390,000)		$ (4,390,000)		$ (3,870,000)