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Note 8 - Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Fair Value Disclosures [Text Block]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	$ 0.5

Fair value of financial asset or other 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, elected not to be offset against an obligation to return collateral under a master netting arrangement.

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