INCOME TAXES - Components of Income (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Income Tax Disclosure [Abstract] | |||
| Domestic | $ (10,498) | $ 323,522 | $ 435,709 |
| Foreign | 192,624 | 197,371 | (64,861) |
| Income before income taxes | $ 182,126 | $ 520,893 | $ 370,848 |