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Note 1 - Basis of Consolidation and Presentation (Details) - Long-term Debt (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Long-term Debt [Abstract]    
Total carrying amounts of long-term debt $ 11,606 $ 12,436
Estimated fair value of long-term debt $ 11,376 $ 12,490