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Note 13 - Business Acquisition (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Apr. 01, 2020
Jul. 01, 2019
Dec. 31, 2020
Dec. 31, 2019
Goodwill, Ending Balance     $ 165,088 $ 164,774
Payments to Acquire Businesses, Net of Cash Acquired, Total     1,426 7,246
Long-term Debt, Total     40,576 50,971
Promissory Notes [Member]        
Long-term Debt, Total     1,226 2,400
Winopoly, LLC [Member]        
Business Acquisition, Percentage of Voting Interests Acquired 50.00%      
Business Combination, Consideration Transferred, Total $ 2,553      
Payments to Acquire Businesses, Gross 1,553      
Business Combination, Contingent Consideration, Liability, Total 1,000      
Business Combination, Acquisition Related Costs     $ 169  
Business Combination, Acquired Company Assets as a Percent of Acquiring Entity     0.90%  
Business Combination, Acquired Company Revenues as a Percent of Acquiring Entity     1.70%  
Goodwill, Ending Balance $ 1,131      
Business Acquisition, Percentage of Additional Option to Acquire Voting Interests 50.00%      
Business Combination, Contingent Consideration, Estimated Service Period (Year) 6 years      
Business Combination, Contingent Consideration, Estimated Exercise (Year) 4 years      
Business Combination, Contingent Consideration, Additional Service Requirement (Year) 2 years      
Business Combination, Contingent Consideration, Compensation Expense     $ 1,775  
Winopoly, LLC [Member] | Customer Relationships [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 600      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) 5 years      
Winopoly, LLC [Member] | Developed Technology Rights [Member]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 800      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) 3 years      
Asset Purchase Agreement [Member]        
Goodwill, Ending Balance   $ 4,983    
Payments to Acquire Businesses, Net of Cash Acquired, Total   7,302    
Business Acquisition, Transaction Costs       $ 483
Asset Purchase Agreement [Member] | Promissory Notes [Member]        
Long-term Debt, Total   $ 2,350    
Asset Purchase Agreement [Member] | Customer Relationships [Member]        
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year)   6 years    
Asset Purchase Agreement [Member] | Developed Technology Rights [Member]        
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year)   4 years