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INCOME TAXES - Cash Income Taxes Paid (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
INCOME TAXES
Federal	$ 11,600
Foreign	$ 1,191
Income Tax Paid, after Refund Received, Foreign Jurisdiction [Extensible Enumeration]	country:IL
Payments made for STC investments	$ 11,519
Income Taxes Paid, Net, Total	29,516	$ 30,800	$ 14,300
Income tax refunds and prepaid income taxes	36,019	$ 30,881
Illinois
INCOME TAXES
State and local	3,166
Other
INCOME TAXES
State and local	$ 2,040