Accumulated Other Comprehensive Income - Component of Accumulated Other Comprehensive Income (Details) - USD ($)	Oct. 31, 2024	Jan. 31, 2024	Oct. 31, 2023
Accumulated Other Comprehensive Income Loss [Line Items]
Foreign currency translation adjustments	$ 91,593,000	$ 93,840,000	$ 83,261,000
Available-for-sale securities	193,000	169,000	144,000
Cash flow hedges	217,000	43,000	(2,000)
Total accumulated other comprehensive income	90,323,000	92,335,000	81,727,000
Unrecognized Prior Service Cost
Accumulated Other Comprehensive Income Loss [Line Items]
Defined benefit pension plan	(134,000)	(171,000)	(186,000)
Net Actuarial Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Defined benefit pension plan	$ (1,546,000)	$ (1,546,000)	$ (1,490,000)