INCOME TAXES - Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
INCOME TAXES
Federal corporate income tax rate (as percent)	21.00%	21.00%
Computed expected income tax expense	$ 631	$ 2,049
State income taxes, net of federal tax effect	84	134
Deferred tax asset adjustments	220	66
Foreign tax rate differential	(198)	(31)
Other permanent differences and adjustments, net	158	55
Income tax expense	$ 895	$ 2,273