Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Apr. 30, 2022	Jan. 31, 2022	Apr. 30, 2021
Assets:
Total assets measured at fair value	$ 73,424	$ 77,739	$ 74,348
Liabilities:
Total liabilities measured at fair value	45,610	47,431	47,420
Level 1
Assets:
Total assets measured at fair value	45,489	48,446	48,495
Liabilities:
Total liabilities measured at fair value	44,283	47,261	47,346
Level 2
Assets:
Total assets measured at fair value	1,761	197	130
Liabilities:
Total liabilities measured at fair value	1,327	170	74
Level 3
Assets:
Total assets measured at fair value	26,174	29,096	25,723
Liabilities:
Total liabilities measured at fair value	0	0	0
Other Current Assets | Available-for-sale securities
Assets:
Total assets measured at fair value	242	249	240
Other Current Assets | Short-term investment
Assets:
Total assets measured at fair value	162	164	169
Other Current Assets | Hedge derivatives-Assets
Assets:
Total assets measured at fair value	1,761	197	130
Other Current Assets | Level 1 | Available-for-sale securities
Assets:
Total assets measured at fair value	242	249	240
Other Current Assets | Level 1 | Short-term investment
Assets:
Total assets measured at fair value	162	164	169
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	1,761	197	130
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	802	772	740
Other Non-current Assets | SERP assets - employee
Assets:
Total assets measured at fair value	44,283	47,261	47,346
Other Non-current Assets | Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	26,174
Other Non-current Assets | Level 1 | SERP assets - employer
Assets:
Total assets measured at fair value	802	772	740
Other Non-current Assets | Level 1 | SERP assets - employee
Assets:
Total assets measured at fair value	44,283	47,261	47,346
Other Non-current Assets | Level 1 | Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	0	0
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 2 | Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	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 Assets | Level 3 | Defined Benefit Plan Assets
Assets:
Total assets measured at fair value	26,174	29,096
Other non-current liabilities | SERP liabilities - employee
Liabilities:
Total liabilities measured at fair value	44,283	47,261	47,346
Other non-current liabilities | Defined Benefit Plan Assets
Assets:
Total assets measured at fair value		29,096	25,723
Other non-current liabilities | Level 1 | SERP liabilities - employee
Liabilities:
Total liabilities measured at fair value	44,283	47,261	47,346
Other non-current liabilities | Level 1 | Defined Benefit Plan Assets
Assets:
Total assets measured at fair value			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
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			25,723
Accrued Liabilities | Hedge derivatives-Liabilities
Liabilities:
Total liabilities measured at fair value	1,327	170	74
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	1,327	170	74
Accrued Liabilities | Level 3 | Hedge derivatives-Liabilities
Liabilities:
Total liabilities measured at fair value	$ 0	$ 0	$ 0