Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Share-based Compensation (Details Textual)

v3.8.0.1
Note 8 - Share-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 600,000 1,000,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 114.60 $ 107.60
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 20.47 $ 17.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 32,625 22,145
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 0.9 $ 0.9
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 32.5  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 219 days  
Selling, General and Administrative Expenses [Member]    
Allocated Share-based Compensation Expense $ 3.8 $ 3.2
Restricted Stock Units (RSUs) [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 500 64,931
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 122.57 $ 109.36
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 0 16,653
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 106.59