Note 12 - Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Balance	$ 116,065	$ 133,247
Balance	129,466	116,065
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(8,345)	(7,661)
Other comprehensive loss before reclassifications	157	(684)
Amounts reclassified from accumulated other comprehensive loss	0	0
Net current period other comprehensive loss	157	(684)
Balance	$ (8,188)	$ (8,345)