Annual report pursuant to Section 13 and 15(d)

Note 10 - Share-based Compensation (Details Textual)

v3.5.0.2
Note 10 - Share-based Compensation (Details Textual) - USD ($)
12 Months Ended 287 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Nov. 30, 2015
Restricted Stock [Member]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 0      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 0      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 700,000 $ 800,000    
Restricted Stock Units (RSUs) [Member]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 1,400,000      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 92,050     0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 109 days      
Stock Appreciation Rights (SARs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 0      
Stock Option Plan 1992 [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 6,487,867      
Stock Option Plan 1992 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 1,341,207      
Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 5 years      
Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 3 years      
Independent Directors [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 3 years      
Certain Executives Not Including Chief Executive Officer [Member]        
Vesting Condition, Minimum Annual Growth in Operating Income 5.00%      
Vesting Condition, Cumulative Compound Growth Rate 5.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number 196,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 130,000      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 2,000,000      
Allocated Share-based Compensation Expense 2,400,000 1,200,000 $ 1,300,000  
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense $ 800,000 $ 500,000 $ 500,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 24,367      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Contractual Term 10 years      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 3 years 36 days      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 907,073 994,888    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 11.53 $ 11.30 $ 11.42  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 300,000 $ 4,500,000 $ 200,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 219 days