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Note 10 - Derivative Financial Instruments - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
6 Months Ended
Dec. 31, 2015
Jun. 30, 2015
Interest Rate Swap Effective March 15, 2012 [Member]    
Notional Amount $ 10,000  
Fixed Rate 2.745%  
Maturity Mar. 15, 2016  
Fair Value $ (60) $ (186)
Interest Rate Swap Effective December 19, 2014 Number One [Member]    
Notional Amount $ 20,000  
Fixed Rate 1.18%  
Maturity Dec. 19, 2017  
Fair Value $ (85) (140)
Interest Rate Swap Effective December 19, 2014 Number Two [Member]    
Notional Amount $ 5,000  
Fixed Rate 1.20%  
Maturity Dec. 19, 2017  
Fair Value $ (23) (36)
Interest Rate Swap Effective December 19, 2015 [Member]    
Notional Amount $ 15,000  
Fixed Rate 1.46%  
Maturity Dec. 19, 2018  
Fair Value $ (117) (39)
Interest Rate Swap Effective December 18, 2015 [Member]    
Notional Amount $ 10,000  
Fixed Rate 2.005%  
Maturity Dec. 19, 2019  
Fair Value $ (246) (150)
Notional Amount  
Fixed Rate  
Fair Value $ (531) $ (551)