Related party transactions (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2024	Apr. 30, 2023	Jan. 31, 2024
Related Party Transaction [Line Items]
Revenues	$ 101,217	$ 83,845
Accounts receivable	66,255		$ 64,863
General and administrative	19,052	19,877
Related Party
Related Party Transaction [Line Items]
Revenues	328	288
Accounts receivable	$ 208		$ 416
General and administrative		$ 118

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details