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Note 9 - Fair Value of Financial Instruments
6 Months Ended
Jun. 30, 2013
Fair Value Disclosures [Abstract]  
Fair Value Disclosures [Text Block]

(9)  Fair Value of Financial Instruments


The carrying amounts of accounts receivable and accounts payable approximate fair value because of the short maturity of these instruments. The carrying amount of our long-term debt approximates fair value as its interest rate is based upon prevailing market rates.