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Note 6 - Business Combination (Details Textual) - USD ($) $ in Thousands			3 Months Ended
	Apr. 05, 2021	Dec. 31, 2020	Apr. 30, 2021	Apr. 30, 2020
Payments to Acquire Businesses, Net of Cash Acquired, Total			$ 9,493	$ (0)
Foreign-Trade Zone Corporation [Member]
Business Combination, Consideration Transferred, Total	$ 12,600
Payments to Acquire Businesses, Net of Cash Acquired, Total	9,500
Cash Acquired from Acquisition	3,500
Business Combination, Contingent Consideration, Liability, Total	700
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low	0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	2,400
Foreign-Trade Zone Corporation [Member] \| Promissory Note Issued for Acquisition [Member]
Business Combination, Contingent Consideration, Liability, Total	$ 2,400
Allocation Network GmbH [Member]
Business Combination, Consideration Transferred, Total		$ 19,000
Payments to Acquire Businesses, Net of Cash Acquired, Total		14,200
Cash Acquired from Acquisition		900
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low		0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		10,200
Business Combination, Consideration Transferred, Liabilities Incurred		$ 4,800