INTANGIBLE ASSETS AND GOODWILL INTANGIBLE ASSETS AND GOODWILL - FUTURE AMORTIZATION OF INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands |
Apr. 30, 2018 |
Jan. 31, 2018 |
|---|---|---|
| Intangible Assets - Future Amortization [Abstract] | ||
| 2019 (remainder of year) | $ 39,093 | |
| 2020 | 42,643 | |
| 2021 | 34,690 | |
| 2022 | 30,690 | |
| 2023 | 23,545 | |
| 2024 and thereafter | 37,116 | |
| Intangible assets with finite lives, Net | $ 207,777 | $ 226,093 |