XML 78 R59.htm IDEA: XBRL DOCUMENT v3.10.0.1
SIGNIFICANT ACCOUNTING POLICIES - Advertising Costs (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Selling, General and Administrative Expenses      
Property, Plant and Equipment [Line Items]      
Advertising costs $ 4.3 $ 3.8 $ 3.3