SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION - OTHER (EXPENSE) INCOME (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Apr. 30, 2018 |
Apr. 30, 2017 |
|
| Other Income and Expenses [Abstract] | ||
| Foreign currency losses, net | $ (1,835) | $ (424) |
| Gains (losses) on derivative financial instruments, net | 1,488 | (370) |
| Other nonoperating income and expense, net | (117) | (1,095) |
| Other expense, net | $ (464) | $ (1,889) |