STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - DIVIDENDS ON COMMON STOCK (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Apr. 30, 2018 |
Apr. 30, 2017 |
|
| Stockholders' Equity Note [Abstract] | ||
| Dividends on common stock | $ 0 | $ 0 |
| Treasury stock aquired (in shares) | 4,000 | 0 |
| Treasury stock acquired (in dollars) | $ 173,000 | $ 0 |