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Note 6 - Loan Payable (Details) (USD $)
 9 Months Ended 12 Months Ended 12 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2014
Dec. 31, 2012
2012 Demand Loan Facilities [Member]
Maximum [Member]
Dec. 31, 2012
2012 Demand Loan Facilities [Member]
Dec. 31, 2012
DLR Loan [Member]
Base Rate [Member]
Jan. 31, 2013
DLR Loan [Member]
Dec. 31, 2012
2012 DLRR Loan [Member]
Base Rate [Member]
Dec. 31, 2012
2012 DLRR Loan [Member]
London Interbank Offered Rate (LIBOR) [Member]
Dec. 31, 2012
2012 DLRR Loan [Member]
Sep. 30, 2014
Amended Credit Facility [Member]
Sep. 30, 2014
Foreign Exchange Risk [Member]
Sep. 30, 2014
Operating Demand Loan [Member]
Note 6 - Loan Payable (Details) [Line Items]                      
Line of Credit Facility, Maximum Borrowing Capacity   $ 14,000,000 $ 14,000,000             $ 3,500,000 $ 1,000,000
Debt Instrument, Basis Spread on Variable Rate       1.25%   1.25% 2.50%       1.25%
Line of Credit Facility Share Repurchase Limit   2,000,000                  
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage     0.20%                
Debt Instrument, Term               4 years      
Line of Credit Facility, Covenant Period 18 months                    
Derivative Asset, Fair Value, Gross Asset                   22,800,000  
Debt Instrument, Fee Amount                     500
Long-term Line of Credit         5,200,000           0
Maximum Total Funded Debt To EBITDA Ratio                 2.00    
Minimum Fixed Charge Coverage                 1.20    
Line of Credit Facility Maximum Annual Capital Expenditure Ceiling                 $ 3,600,000