Annual report pursuant to Section 13 and 15(d)

Note 10 - Share-based Compensation and Other Benefit Plans (Details Textual)

v3.19.3
Note 10 - Share-based Compensation and Other Benefit Plans (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance 3,656,000 3,452,000 2,821,000 1,819,000
Share-based Payment Arrangement, Accelerated Cost   $ 8.3    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 34.66 $ 22.07 $ 18.21  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 159.0 $ 10.6 $ 2.3  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value 31.7 8.8 5.0  
Share-based Payment Arrangement, Expense, Tax Benefit   0.4 0.5  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 26.6      
Share-based Compensation Arrangement by Share-based Payment Award, Non-vested, Forfeiture Rate 3.00%      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 2 years      
US Profit Sharing and Savings Plan [Member]        
Defined Contribution Plan, Cost $ 2.8 2.5 2.2  
GB Profit Sharing and Savings Plan [Member]        
Defined Contribution Plan, Cost 1.4 1.4 0.8  
Selling, General and Administrative Expenses [Member]        
Share-based Payment Arrangement, Expense 32.3 28.2 14.6  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value 2.3 1.7 1.4  
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 3.1 $ 1.6 0.9  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   3 years    
Equity Incentive Plan 2010 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 7,500,000      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2,600,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance 3,600,000      
Equity Incentive Plan 2010 [Member] | Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years      
Nonqualified Stock Options Plan 1998 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance 20,000      
Employee Stock Purchase Plan 2014 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 200,000      
Share-based Payment Arrangement, Expense $ 0.5 $ 0.3 0.2  
Performance Incentive Programs [Member] | Executive Officer [Member]        
Salary and Wage, Officer, Excluding Cost of Good and Service Sold $ 9.3 $ 7.2 $ 4.7  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total 618,898 553,750 896,778  
Performance Incentive Programs [Member] | Restricted Stock [Member] | Executive Officer [Member]        
Stock Issued During Period, Shares, Restricted Stock Award, Gross 11,279 14,194 16,653  
Performance Incentive Programs [Member] | Restricted Stock Units (RSUs) [Member] | Executive Officer [Member]        
Stock Issued During Period, Shares, Restricted Stock Award, Gross 25,903 35,174   39,931