Note 3 - Stock Based Compensation (Details Textual) |
3 Months Ended | 9 Months Ended |
|---|---|---|
|
Mar. 31, 2016
USD ($)
shares
|
Mar. 31, 2016
USD ($)
shares
|
|
| 2006 Omnibus Incentive Plan [Member] | ||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $ 0 | $ 0 |
| Restricted Stock [Member] | Weighted Average [Member] | ||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 3 years 109 days | |
| Restricted Stock [Member] | Total Period [Member] | ||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 3 years 292 days | |
| Restricted Stock [Member] | ||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $ 6,700,000 | $ 6,700,000 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | shares | 72,327 | 80,249 |