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Note 2 - Acquisition - Fair Value of Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Jan. 04, 2021
Dec. 31, 2020
Dec. 31, 2019
Goodwill $ 61,614   $ 57,255 $ 57,935
PatientWisdom, Inc. [Member]        
Current Assets   $ 184    
Property and equipment   10    
Goodwill   4,340    
Total assets acquired   5,234    
Current liabilities   284    
Net assets acquired   4,950    
PatientWisdom, Inc. [Member] | Customer Relationships [Member]        
Intangible assets   100    
PatientWisdom, Inc. [Member] | Technology-Based Intangible Assets [Member]        
Intangible assets   $ 600