LEASES - Lease assets and liabilities (Details) - USD ($) $ in Thousands	Jul. 31, 2024	Jan. 31, 2024	Jul. 31, 2023
Assets and Liabilities, Lessee [Abstract]
Operating lease assets	$ 204,008	$ 216,886	$ 229,723
Classification of operating lease assets	Operating lease assets
Current operating lease liabilities	$ 54,983	56,587	54,563
Classification current operating lease liabilities	Current operating lease liabilities
Noncurrent operating lease liabilities	$ 163,750	178,247	192,981
Classification of noncurrent operating liabilities	Noncurrent operating lease liabilities
Total lease liabilities	$ 218,733	$ 234,834	$ 247,544