REVENUE RECOGNITION - Broker Fee Balance (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2019 USD ($)
Change In Deferred Costs [Roll Forward]
Balance as of June 30, 2018	$ 14,002
Additions	5,976
Amortization	(1,625)
Write-offs	(534)
Balance as of June 30, 2019	$ 17,819