LEASES - Lease assets and liabilities (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Jan. 31, 2023	Apr. 30, 2022
Assets and Liabilities, Lessee [Abstract]
Operating lease assets	$ 237,056	$ 239,665	$ 164,607
Classification of operating lease assets	Operating lease assets
Current operating lease liabilities	$ 51,024	52,917	41,112
Classification current operating lease liabilities	Current operating lease liabilities
Noncurrent operating lease liabilities	$ 202,406	204,974	139,686
Classification of noncurrent operating liabilities	Noncurrent operating lease liabilities
Total lease liabilities	$ 253,430	$ 257,891	$ 180,798