Pension and Retirement Savings Plan - Reconciliation of Change in Benefit Obligation, Change in Plan Assets and Net Amount Recognized in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Change in benefit obligation:
Pension benefit obligation at beginning of period	$ 34,424	$ 29,109
Service cost	1,146	1,069	$ 1,138
Interest cost	505	593	57
Benefits (paid)/deposited	(1,798)	623
Prior service credit	0	(74)
Employee contributions	887	898
Actuarial losses	1,200	230
Foreign currency exchange rate impact	(1,936)	1,976
Pension benefit obligation at end of year	34,428	34,424	29,109
Change in plan assets:
Fair value of plan assets at beginning of period	33,731	27,965
Company contributions	1,333	1,350
Benefits (paid)/deposited	(1,798)	623
Actual return on plan assets	2,075	974
Employee contributions	887	898
Foreign currency exchange rate impact	(1,915)	1,921
Fair value of plan assets at end of year	34,313	33,731	$ 27,965
Funded status - consolidated	(115)	(693)
Amounts recognized in the Consolidated Balance Sheets consist of:
Other non-current liabilities	(115)	(693)
Amounts recognized in accumulated other comprehensive income/(loss):
Prior service cost	83	151
Net actuarial loss	2,145	2,031
Tax effect	(475)	(465)
Net amount recognized, after tax	1,753	1,717
Accumulated benefit obligation	$ 34,142	$ 34,244