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Note 2 - Other Balance Sheet Captions (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Capital Leased Assets, Gross	$ 8,376	$ 8,376
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	115,128	108,306
Assets Held under Capital Leases [Member]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 3,660	$ 1,540

- Definition

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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- Definition

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

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