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Note 17 - Acquisitions (Details Textual)
$ / shares in Units, $ in Thousands, € in Millions
12 Months Ended
May 28, 2021
USD ($)
shares
Mar. 01, 2021
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
$ / shares
Oct. 03, 2022
USD ($)
Sep. 30, 2022
$ / shares
Jul. 01, 2022
USD ($)
Mar. 01, 2021
EUR (€)
Feb. 04, 2021
$ / shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares   $ 0.001 $ 0.001   $ 0.001     $ 0.001
Woorank SRL ([Member]                
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High   $ 723         € 0.6  
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares   29,433            
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual     $ 1,000          
Woorank SRL ([Member] | Minimum [Member]                
Business Combination, Contingent Consideration, Shares Issuable, Price Per Share (in dollars per share) | $ / shares   $ 3.38            
Hawk Search [Member]                
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High           $ 1,799    
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual     $ 1,900          
Hawk Search [Member] | Subsequent Event [Member]                
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High       $ 250        
Hawk Search [Member] | Series D Convertible Preferred Stock [Member]                
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares 1,500              
Convertible Preferred Stock, Embedded Beneficial Conversion Feature, Intrinsic Value $ 724