PROPERTY, PLANT, AND EQUIPMENT, NET (Details) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	$ 367,218,000	$ 362,975,000
Accumulated depreciation	(245,426,000)	(240,756,000)
Property, plant and equipment, net	121,792,000	122,219,000	135,045,000
Computer software costs included in construction in progress	2,600,000
Land and buildings
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	106,891,000	105,272,000
Machinery and equipment
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	248,704,000	253,283,000
Construction in progress
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	$ 11,623,000	$ 4,420,000

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.

+ References+ Details

Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References+ Details

- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References+ Details