LEASES - Lease assets and liabilities (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Jan. 31, 2023	Jul. 31, 2022
Assets and Liabilities, Lessee [Abstract]
Operating lease assets	$ 229,723	$ 239,665	$ 209,000
Classification of operating lease assets	Operating lease assets
Current operating lease liabilities	$ 54,563	52,917	49,734
Classification current operating lease liabilities	Current operating lease liabilities
Noncurrent operating lease liabilities	$ 192,981	204,974	179,247
Classification of noncurrent operating liabilities	Noncurrent operating lease liabilities
Total lease liabilities	$ 247,544	$ 257,891	$ 228,981