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Note 10 - Line of Credit (Details) (USD $)
1 Months Ended 0 Months Ended
Apr. 30, 2014
Line of Credit [Member]
London Interbank Offered Rate (LIBOR) [Member]
Apr. 30, 2013
Line of Credit [Member]
Sep. 27, 2014
Line of Credit [Member]
Oct. 27, 2014
Revolving Credit Facility [Member]
Prime Rate [Member]
Oct. 27, 2014
Revolving Credit Facility [Member]
Note 10 - Line of Credit (Details) [Line Items]          
Debt Instrument, Term   3 years      
Line of Credit Facility, Maximum Borrowing Capacity   $ 11,000,000     $ 10,000
Debt Instrument, Basis Spread on Variable Rate 3.25%     0.50%  
Long-term Line of Credit     $ 4,000,000