PROPERTY, PLANT AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 89,434	$ 86,867
Less: accumulated depreciation	45,105	42,585
Net property, plant and equipment	44,329	44,282
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,933	1,971
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	15,647	15,680
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	67,680	66,584
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,174	$ 2,632

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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