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Note 5 - Fair Value Measurement and Fair Value of Financial Instruments (Detail) - Assets and Liabilities Measured at Fair Value on a Recurring Basis (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Fair Value of Derivatives $ 1,085 $ 82
Fair Value, Inputs, Level 2 [Member]
   
Fair Value of Derivatives $ 1,085 $ 82