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Note 7 - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Measured on a recurring basis:
Derivative contracts, net	$ (877)	$ (1,750)
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Building and Building Improvements [Member]
Long-lived assets held and used:
Certain buildings and improvements	3,367
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Measured on a non-recurring basis:
Equity-method investment	$ 28,147	$ 33,282

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Fair value portion of investments accounted under the equity method.

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Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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