Note 9 - Goodwill and Other Intangible Assets (Details Textual) - USD ($)	9 Months Ended
Oct. 31, 2021	Oct. 31, 2020	Jan. 31, 2021
Goodwill, Impairment Loss, Percentage Of Gross Carrying Amount			100.00%
Amortization of Intangible Assets, Total	$ 1,004,000	$ 1,300,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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