|
DEBT (Details) (USD $)
|
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Jun. 30, 2014
|
Jun. 30, 2012
|
|
| Long-term debt disclosure | ||||||
| Total debt | $ 319,484,000 | $ 319,484,000 | $ 311,860,000 | |||
| Convertible notes due 2019, net | ||||||
| Long-term debt disclosure | ||||||
| Total debt | 319,484,000 | 319,484,000 | 311,860,000 | |||
| Aggregate principal amount of convertible senior notes issued | 370,000,000 | |||||
| Interest rate on convertible senior notes (as a percent) | 2.875% | |||||
| Interest expense recognized | 5,600,000 | 5,400,000 | 16,500,000 | 16,000,000 | ||
| Revolving credit facility | ||||||
| Long-term debt disclosure | ||||||
| Maximum availability under the revolving credit facility | 450,000,000 | 450,000,000 | ||||
| Outstanding amount under credit facility | $ 0 | $ 0 | ||||