Note 2 - Significant Accounting Policies - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Accumulated other comprehensive loss, excluding tax effect	$ (3,966)	$ (3,086)
Total stockholders' equity	55,629	51,701	$ 51,174
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated other comprehensive loss, excluding tax effect	(1,879)	(1,438)
Tax effect of equity adjustment foreign currency	91	91
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated other comprehensive loss, excluding tax effect	(2,087)	(1,648)
Tax effect of equity adjustment foreign currency	115	115
AOCI Attributable to Parent [Member]
Total stockholders' equity	$ (3,760)	$ (2,880)	$ (1,466)