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Note 10 - Fair Value Measurements (Details) - Estimated Fair Values of Financial Instrument (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 10 - Fair Value Measurements (Details) - Estimated Fair Values of Financial Instrument [Line Items]
Long-term debt	$ 6,388	$ 6,825
Fair Value, Inputs, Level 3 [Member]
Note 10 - Fair Value Measurements (Details) - Estimated Fair Values of Financial Instrument [Line Items]
Long-term debt	$ 6,794	$ 7,286

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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