Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Share-based Compensation (Details Textual)

v3.5.0.2
Note 4 - Share-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Restricted Stock Units (RSUs) [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 65,000 35,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 109.36 $ 105.01
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 17,000 12,000
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 $ 108.49
Selling, General and Administrative Expenses [Member]    
Allocated Share-based Compensation Expense $ 3.2 $ 2.0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 1,000,000 736,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 107.60 $ 106.66
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 17.98 $ 18.48
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 35.2  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 328 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 22,000 12,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 0.9 $ 0.5