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Note 12 - Commitments and Contingencies (Details) - USD ($)
Mar. 19, 2012
Sep. 30, 2015
Jun. 30, 2013
Standby Letters of Credit [Member]      
Note 12 - Commitments and Contingencies (Details) [Line Items]      
Letters of Credit Outstanding, Amount   $ 0  
LSI Virticus [Member]      
Note 12 - Commitments and Contingencies (Details) [Line Items]      
Liability Payment Period 5 years    
Business Combination, Contingent Consideration, Liability     $ 0
Loss Contingency, Range of Possible Loss, Maximum   $ 2,000,000