PROPERTY, PLANT, AND EQUIPMENT (Details) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	$ 391,726,000	$ 378,392,000
Accumulated depreciation	(253,833,000)	(253,554,000)
Property, plant and equipment, net	137,893,000	124,838,000	121,792,000
Computer software costs included in construction in progress	10,200,000	4,700,000
Capitalized interest	200,000	200,000	200,000
Land and buildings
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	117,653,000	108,841,000
Machinery and equipment
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	255,390,000	257,665,000
Construction in progress
PROPERTY, PLANT, AND EQUIPMENT
Property, plant and equipment	$ 18,683,000	$ 11,886,000

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 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.

+ References+ Details

- 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.

+ References+ Details