INCOME TAXES - Solar Energy Projects And Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022	Jan. 31, 2023
Net Investment Income [Line Items]
Investment account balances	$ 1,100		$ 1,100		$ 1,200
Remaining cash investment commitments	0		$ 0
Expected life of investment			6 years
Cash paid for income taxes			$ 3,700	$ 1,300
Loss of investment			(98)	1,070
Other income (expense)
Net Investment Income [Line Items]
Loss of investment	$ 100	$ 500	$ 100	$ 1,000