Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Oct. 31, 2025	Jan. 31, 2025	Oct. 31, 2024
Assets:
Total assets measured at fair value	$ 94,926	$ 88,822	$ 90,930
Liabilities:
Total liabilities measured at fair value	56,698	54,553	53,946
Level 1
Assets:
Total assets measured at fair value	57,639	54,496	55,033
Liabilities:
Total liabilities measured at fair value	56,411	53,442	53,869
Level 2
Assets:
Total assets measured at fair value	69	13	373
Liabilities:
Total liabilities measured at fair value	287	1,111	77
Level 3
Assets:
Total assets measured at fair value	37,218	34,313	35,524
Liabilities:
Total liabilities measured at fair value	0	0	0
Other Current Assets \| Available-for-sale securities
Assets:
Total assets measured at fair value	283	306	278
Other Current Assets \| Short-term investment
Assets:
Total assets measured at fair value	148	143	149
Other Current Assets \| Hedge derivatives-Assets
Assets:
Total assets measured at fair value	69	13	373
Other Current Assets \| Level 1 \| Available-for-sale securities
Assets:
Total assets measured at fair value	283	306	278
Other Current Assets \| Level 1 \| Short-term investment
Assets:
Total assets measured at fair value	148	143	149
Other Current Assets \| Level 1 \| Hedge derivatives-Assets
Assets:
Total assets measured at fair value	0	0	0
Other Current Assets \| Level 2 \| Available-for-sale securities
Assets:
Total assets measured at fair value	0	0	0
Other Current Assets \| Level 2 \| Short-term investment
Assets:
Total assets measured at fair value	0	0	0
Other Current Assets \| Level 2 \| Hedge derivatives-Assets
Assets:
Total assets measured at fair value	69	13	373
Other Current Assets \| Level 3 \| Available-for-sale securities
Assets:
Total assets measured at fair value	0	0	0
Other Current Assets \| Level 3 \| Short-term investment
Assets:
Total assets measured at fair value	0	0	0
Other Current Assets \| Level 3 \| Hedge derivatives-Assets
Assets:
Total assets measured at fair value	0	0	0
Other Non-current Assets \| SERP assets - employer
Assets:
Total assets measured at fair value	797	605	737
Other Non-current Assets \| SERP assets - employee
Assets:
Total assets measured at fair value	56,411	53,442	53,869
Other Non-current Assets \| Level 1 \| SERP assets - employer
Assets:
Total assets measured at fair value	797	605	737
Other Non-current Assets \| Level 1 \| SERP assets - employee
Assets:
Total assets measured at fair value	56,411	53,442	53,869
Other Non-current Assets \| Level 2 \| SERP assets - employer
Assets:
Total assets measured at fair value	0	0	0
Other Non-current Assets \| Level 2 \| SERP assets - employee
Assets:
Total assets measured at fair value	0	0	0
Other Non-current Assets \| Level 3 \| SERP assets - employer
Assets:
Total assets measured at fair value	0	0	0
Other Non-current Assets \| Level 3 \| SERP assets - employee
Assets:
Total assets measured at fair value	0	0	0
Other non-current liabilities \| SERP liabilities - employee
Liabilities:
Total liabilities measured at fair value	56,411	53,442	53,869
Other non-current liabilities \| Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	37,218	34,313	35,524
Other non-current liabilities \| Level 1 \| SERP liabilities - employee
Liabilities:
Total liabilities measured at fair value	56,411	53,442	53,869
Other non-current liabilities \| Level 1 \| Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	0	0	0
Other non-current liabilities \| Level 2 \| SERP liabilities - employee
Liabilities:
Total liabilities measured at fair value	0	0	0
Other non-current liabilities \| Level 2 \| Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	0	0	0
Other non-current liabilities \| Level 3 \| SERP liabilities - employee
Liabilities:
Total liabilities measured at fair value	0	0	0
Other non-current liabilities \| Level 3 \| Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	37,218	34,313	35,524
Accrued Liabilities \| Hedge derivatives-Liabilities
Liabilities:
Total liabilities measured at fair value	287	1,111	77
Accrued Liabilities \| Level 1 \| Hedge derivatives-Liabilities
Liabilities:
Total liabilities measured at fair value	0	0	0
Accrued Liabilities \| Level 2 \| Hedge derivatives-Liabilities
Liabilities:
Total liabilities measured at fair value	287	1,111	77
Accrued Liabilities \| Level 3 \| Hedge derivatives-Liabilities
Liabilities:
Total liabilities measured at fair value	$ 0	$ 0	$ 0