DEBT - Summary of Debt (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Jun. 30, 2018 |
|---|---|---|
| Debt Instrument [Line Items] | ||
| Debt — short-term | $ 30,675 | $ 24,425 |
| Debt issuance costs, net | (575) | (575) |
| Debt — long-term | 464,700 | 460,352 |
| Debt issuance costs, net | (1,550) | (2,148) |
| Term loan facility | ||
| Debt Instrument [Line Items] | ||
| Debt — short-term | 31,250 | 25,000 |
| Debt — long-term | 431,250 | 462,500 |
| Revolving credit facility | Line of credit | ||
| Debt Instrument [Line Items] | ||
| Debt — long-term | $ 35,000 | $ 0 |