SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2020 |
Jul. 01, 2019 |
Jun. 30, 2019 |
|
| Lessee, Lease, Description [Line Items] | |||
| Accounting Standards Update [Extensible List] | us-gaap:AccountingStandardsUpdate201602Member | ||
| Operating lease right-of-use assets, net | $ 24,444 | $ 0 | |
| Operating lease liability | $ 25,589 | ||
| Cumulative Effect, Period of Adoption, Adjustment | |||
| Lessee, Lease, Description [Line Items] | |||
| Operating lease right-of-use assets, net | $ 23,300 | ||
| Operating lease liability | 24,000 | ||
| Deferred rent | $ 700 |