INCOME TAXES - Equity Method Investments And Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Net Investment Income [Line Items]
Payment for equity method investment	$ 4,085
Investment tax credits	3,000
Remaining cash investment commitments	$ 900
Expected life of investment	6 years
Cash paid for income taxes	$ 7,500	$ 3,100
Cash received from income tax refunds		$ 800
Other income (expense)
Net Investment Income [Line Items]
loss of Investment	$ 300