Annual report pursuant to Section 13 and 15(d)

Note 10 - Share-based Compensation - Equity-based Compensation Expenses Related to Performance-based Shares (Details)

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Note 10 - Share-based Compensation - Equity-based Compensation Expenses Related to Performance-based Shares (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Total expense $ 1,000 $ 1,300 $ 2,400
Restricted Stock Units (RSUs) [Member]      
Total expense 537 806  
Granted Within the Fiscal Year Ended June 30, 2016 [Member] | Restricted Stock Units (RSUs) [Member]      
Total expense 92 794  
Granted Within the Fiscal Year Ended June 30, 2017 [Member] | Restricted Stock Units (RSUs) [Member]      
Total expense (12) 12  
Granted Within the Fiscal Year Ended June 30, 2018 [Member] | Restricted Stock Units (RSUs) [Member]      
Total expense $ 457