INCOME TAXES - Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
INCOME TAXES
Federal corporate income tax rate (as percent)	21.00%	21.00%
Computed expected income tax expense	$ (2,049)	$ (3,052)
State income taxes, net of federal tax effect	(134)	(334)
Deferred tax asset adjustments	(66)	(284)
Other permanent differences and adjustments, net	(24)	(98)
Income tax expense	$ (2,273)	$ (3,768)