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Note 2 - Significant Accounting Policies - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Accumulated other comprehensive loss, excluding tax effect	$ (6,707)	$ (3,309)
Total accumulated other comprehensive loss	57,784	54,457	$ 49,313
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated other comprehensive loss, excluding tax effect	(6,707)	(1,947)
Tax effect of equity adjustment foreign currency	258	91
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated other comprehensive loss, excluding tax effect	0	(1,362)
Tax effect of equity adjustment foreign currency	0	114
AOCI Attributable to Parent [Member]
Total accumulated other comprehensive loss	$ (6,449)	$ (3,104)	$ (3,287)

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Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

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