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Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) (USD $)
 3 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Fair Value $ (804,000) $ (1,061,000)
Identical Row 1 [Member] | Effective Date 1 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 5,000,000  
Fixed Rate 2.495%  
Maturity May 24, 2015  
Fair Value (79,000) (108,000)
Identical Row 2 [Member] | Effective Date 1 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 5,000,000  
Fixed Rate 2.495%  
Maturity May 24, 2015  
Fair Value (79,000) (108,000)
Effective Date 2 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 10,000,000  
Fixed Rate 2.395%  
Maturity May 26, 2015  
Fair Value (150,000) (206,000)
Effective Date 3 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 5,000,000  
Fixed Rate 2.34%  
Maturity May 26, 2015  
Fair Value (73,000) (100,000)
Effective Date 4 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 5,000,000  
Fixed Rate 2.38%  
Maturity May 24, 2015  
Fair Value (75,000) (103,000)
Effective Date 5 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 5,000,000  
Fixed Rate 1.28%  
Maturity Sep. 21, 2013  
Effective Date 6 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 5,000,000  
Fixed Rate 1.595%  
Maturity Sep. 22, 2014  
Fair Value   (18,000)
Effective Date 7 [Member]
    
Note 10 - Derivative Financial Instruments (Details) - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) [Line Items]    
Notional Amount 10,000,000  
Fixed Rate 2.745%  
Maturity Mar. 15, 2016  
Fair Value $ (348,000) $ (418,000)