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Summary of Property Under Capital Lease (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule of Capital Lease Obligations [Line Items]
Land, buildings and equipment	$ 27,836	$ 37,037
Less: accumulated amortization	(26,540)	(35,264)
Property under capital lease, Total	$ 1,296	$ 1,773

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.