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Note 3 - Business Combination (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 15, 2022
USD ($)
shares
Feb. 18, 2022
USD ($)
shares
Jun. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
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     $ 4,800 $ 4,800   $ 10,000 $ 29,600  
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability     $ 2,600 5,800        
Merger [Member]                
Business Combination, Share Exchange Ratio               8.69144
Payments to Acquire Businesses, Gross       (0) $ 1,631      
I-Access Solutions Pte. Ltd. [Member]                
Business Combination, Consideration Transferred, Total   $ 7,100            
Payments to Acquire Businesses, Gross   1,500            
Business Combination, Contingent Consideration, Liability, Total $ 5,800 5,600            
Business Combination, Acquisition Related Costs   $ 300            
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability       $ 200        
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            
Stock Issued for Acquisitions, No Longer Contingent and Reclassified to Mezzanine Equity (in shares) | shares 292,440              
Business Acquisition, Shares Held in Escrow, No Longer Contingent and Reclassified to Mezzanine Equity (in shares) | shares 30,252              
I-Access Solutions Pte. Ltd. [Member] | Put Option to Repurchase Shares [Member]                
Business Acquisition, Conditional Option to Repurchase Shares   $ 5,900            
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   $ 700            
I-Access Solutions Pte. Ltd. [Member] | Revenue Shortfall [Member]                
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High   $ 700