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Note 1 - Description of Business (Details Textual)
$ / shares in Units, € in Thousands, $ in Thousands
6 Months Ended 7 Months Ended 8 Months Ended
May 14, 2021
USD ($)
$ / shares
shares
May 11, 2021
USD ($)
$ / shares
Mar. 01, 2021
USD ($)
$ / shares
Feb. 04, 2021
USD ($)
$ / shares
shares
Mar. 31, 2021
USD ($)
$ / shares
Mar. 31, 2020
USD ($)
Mar. 31, 2021
$ / shares
shares
Dec. 31, 2021
USD ($)
Mar. 01, 2021
EUR (€)
Sep. 30, 2020
$ / shares
Aug. 17, 2020
$ / shares
shares
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares         $ 0.001   $ 0.001     $ 0.001  
Proceeds From Issuance of Common Stock, Net of Issuance Costs         $ 2,462          
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.001 $ 0.001 $ 0.001   $ 0.001     $ 0.001  
Certain Institutional and Accredited Investors [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares       880,000              
Shares Issued, Price Per Share (in dollars per share) | $ / shares       $ 0.001              
Share Price (in dollars per share) | $ / shares       $ 3.10              
Proceeds From Issuance of Common Stock, Net of Issuance Costs       $ 2,500              
At the Market Offering [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares             0        
Sale of Stock Agreement, Maximum Shares to be Sold (in shares) | shares                     4,796,090
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares                     $ 0.001
Subsequent Event [Member]                      
Proceeds from Issuance of Private Placement $ 2,700                    
Subsequent Event [Member] | Series D Preferred Stock Warrants [Member]                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares 592,105                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 2.51                    
Subsequent Event [Member] | Series D Preferred Stock [Member]                      
Preferred Stock, Dividend Rate, Percentage 9.00%                    
Subsequent Event [Member] | May 2021 Registered Offering [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares 1,060,000                    
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 2.28                    
Proceeds from Issuance of Common Stock $ 2,400                    
Subsequent Event [Member] | Private Placement [Member] | Series D Preferred Stock [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares 2,700                    
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 1,000                    
Hawk Search [Member] | Forecast [Member]                      
Payments to Acquire Businesses, Gross               $ 2,000      
Hawk Search [Member] | Subsequent Event [Member]                      
Business Combination, Consideration Transferred, Excluding Liabilities   $ 9,250                  
Payments to Acquire Businesses, Gross   5,750                  
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable   $ 1,500                  
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares   $ 0.001                  
Business Combination, Consideration Transferred, Total   $ 11,830                  
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High   $ 2,580                  
Woorank SRL ([Member]                      
Payments to Acquire Businesses, Gross     $ 711                
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable     99                
Business Combination, Consideration Transferred, Total     2,779                
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High     $ 723           € 600    
Shares Issued, Price Per Share (in dollars per share) | $ / shares     $ 3.38                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Long-term Debt     $ 2,145                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt     659                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt     352                
Business Combination, Deferred Consideration     487                
Business Combination, Contingent Consideration, Liability, Total     $ 1,600                
Woorank SRL ([Member] | Seller Note [Member]                      
Debt Instrument, Term (Year)     5 years