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Note 10 - Equity Compensation (Details) (USD $)
3 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Sep. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Jun. 30, 2011
Sep. 30, 2010
Jun. 30, 2010
Jun. 30, 2013
Note 10 - Equity Compensation (Details) [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) 696,151                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number (in Shares) 2,662,464 2,677,464   2,740,850             2,341,150
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares) 2,141,339     1,932,987              
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 503,704                    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 28 months                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) 0     421,000              
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)       $ 7.20              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)       $ 2.64              
Share-based Compensation, Valuation Assumptions, Expected Forfeiture Rate   2.00% 2.10% 2.20% 2.30% 3.40% 4.10% 3.60% 3.00% 6.55%  
Stock or Unit Option Plan Expense 86,000     685,000              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in Shares) 2,654,493                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price (in Dollars per share) $ 9.59                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value 217,885                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term 5 years 36 days                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value       6,428              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Aggregate Grant Date Fair Value 598,316     734,052              
Proceeds from Stock Options Exercised       25,000              
Increase in Common Stock Related to Stock Option Exercises 5,665                    
Reduction or Incorease of Income Tax Expense Related to Stock Option Exercises 5,665                    
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in Shares) 5,680     5,940              
Stock Issued During Period, Value, Share-based Compensation, Gross 47,500     47,500              
Treasury Stock, Shares (in Shares)   307,328   323,311              
Treasury Stock, Value 3,024,900 2,914,700                  
Employee Stock Option [Member]
                     
Note 10 - Equity Compensation (Details) [Line Items]                      
Stock or Unit Option Plan Expense 85,633     685,659              
Excluding Tax Effect of Disqualified Dispositions [Member]
                     
Note 10 - Equity Compensation (Details) [Line Items]                      
Proceeds from Stock Options Exercised       14,704              
Each Ninety Days [Member] | Non-Employee Directors [Member]
                     
Note 10 - Equity Compensation (Details) [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 25.00%                    
Annually [Member] | Employees [Member]
                     
Note 10 - Equity Compensation (Details) [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 25.00%                    
Minimum [Member]
                     
Note 10 - Equity Compensation (Details) [Line Items]                      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)       $ 7.20              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)       $ 2.64              
Treasury Stock Acquired, Repurchase Authorization 19,000                    
Maximum [Member]
                     
Note 10 - Equity Compensation (Details) [Line Items]                      
Treasury Stock Acquired, Repurchase Authorization 23,000                    
Employee Salary Deferrals or Company Contributions [Member]
                     
Note 10 - Equity Compensation (Details) [Line Items]                      
Treasury Stock, Value, Acquired, Cost Method $ 110,200     $ 129,900              
Treasury Stock, Shares, Acquired (in Shares) 15,983     17,927