SIGNIFICANT ACCOUNTING POLICIES - Advertising Costs (Narrative) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2015 |
|
Selling, General and Administrative Expenses | |||
Property, Plant and Equipment [Line Items] | |||
Advertising costs | $ 3.8 | $ 3.3 | $ 2.2 |