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Note 15 - Financial Instruments - Derivatives and Hedging (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Estimated Date To Year End Increase To Interest Expense	$ 0.1
Derivative Liability, Fair Value, Gross Liability	$ 0.1	$ 0.2

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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