SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant, and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 80,967	$ 78,617
Less accumulated depreciation	(48,779)	(45,497)
Property, plant and equipment, net	32,188	33,120
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,887	4,887
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	33,498	32,253
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	26,959	26,212
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	8,242	7,971
Software costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,381	$ 7,294

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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