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Lease Obligations (Details 2) (Machinery and equipment, USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Machinery and equipment
Lease Obligations
Original cost	$ 6,641
Accumulated depreciation	$ 5,252

Property, plant, or equipment held under lease agreements classified as an asset.

The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.