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Note 3 - Business Combination (Details Textual)
$ in Millions
Feb. 18, 2022
USD ($)
shares
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Jul. 01, 2021
USD ($)
Nov. 23, 2020
Business Combination, Share Exchange Ratio       8.69144  
Business Combination, Contingent Consideration, Liability, Total   $ 7.1 $ 10.0 $ 29.6  
Merger [Member]          
Business Combination, Share Exchange Ratio         8.69144
I-Access Solutions Pte. Ltd. [Member]          
Business Combination, Consideration Transferred, Total $ 7.1        
Payments to Acquire Businesses, Gross 1.5        
Business Combination, Contingent Consideration, Liability, Total $ 5.6 $ 5.7      
Stock Issued During Period, Shares, Acquisitions (in shares) | shares 292,440        
Business Acquisition, Shares Held in Escrow (in shares) | shares 30,252        
Business Combination, Acquisition Related Costs $ 0.3        
I-Access Solutions Pte. Ltd. [Member] | Technology-Based Intangible Assets [Member]          
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) 10 years        
I-Access Solutions Pte. Ltd. [Member] | Customer Relationships [Member]          
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) 10 years        
I-Access Solutions Pte. Ltd. [Member] | Order or Production Backlog [Member]          
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year) 1 year        
I-Access Solutions Pte. Ltd. [Member] | EduTech Common Shares [Member]          
Business Combination, Contingent Consideration, Percentage of Shares 2.96%        
Stock Issued During Period, Shares, Acquisitions (in shares) | shares 292,440        
Business Acquisition, Shares Held in Escrow (in shares) | shares 30,252        
I-Access Solutions Pte. Ltd. [Member] | Put Option to Repurchase Shares [Member]          
Business Acquisition, Conditional Option to Repurchase Shares $ 5.9        
Business Acquisition, Conditional Option to Repurchase Shares, Period (Month) 24 months        
I-Access Solutions Pte. Ltd. [Member] | Revenue Surplus [Member]          
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High $ 0.7        
I-Access Solutions Pte. Ltd. [Member] | Revenue Shortfall [Member]          
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High $ 0.7