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Note 8 - Debt (Details) - Current and Long-Term Debt (Parentheticals)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Note 8 - Debt (Details) - Current and Long-Term Debt (Parentheticals) [Line Items]    
Due Dec. 31, 2020 Dec. 31, 2020
Interest rate 4.00% 4.00%
London Interbank Offered Rate (LIBOR) [Member]
    
Note 8 - Debt (Details) - Current and Long-Term Debt (Parentheticals) [Line Items]    
Interest LIBOR plus 3.00% 3.00%
Weighted Average [Member]
    
Note 8 - Debt (Details) - Current and Long-Term Debt (Parentheticals) [Line Items]    
Weighted Average Interest Rate 4.00%