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Note 2 - Acquisitions - Components of Acquisition Related Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Deferred compensation arrangements   $ 2,108    
Acquisition-related costs $ 5,700 5,735    
Total   $ 7,843