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STOCK-BASED COMPENSATION (Details) - USD ($) $ in Millions	12 Months Ended
STOCK-BASED COMPENSATION (Details) - USD ($) $ in Millions	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
STOCK-BASED COMPENSATION
Number of shares authorized	1,650,000
Number of shares available for future awards	482,789
Restricted Stock [Member] \| Board of Directors \| Maximum
STOCK-BASED COMPENSATION
Vesting period	1 year
Restricted Stock [Member] \| Employees \| Minimum
STOCK-BASED COMPENSATION
Vesting period	3 years
Restricted Stock [Member] \| Employees \| Maximum
STOCK-BASED COMPENSATION
Vesting period	6 years
Restricted Stock Units (RSUs) [Member] \| Employees \| Minimum
STOCK-BASED COMPENSATION
Vesting period	3 years
Restricted Stock Units (RSUs) [Member] \| Employees \| Maximum
STOCK-BASED COMPENSATION
Vesting period	6 years
The Plan
STOCK-BASED COMPENSATION
Compensation cost	$ 2.7	$ 2.7	$ 3.1
Income tax benefit (net)	$ 0.6	$ 0.8	$ 1.2