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Note 8 - Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Intangible assets accumulated amortization $ 25,056 $ 22,228
Intangible assets, gross 55,327 55,327
Intangible assets, net 30,271 33,099
Trade Names [Member]    
Intangible assets not subject to amortization 14,287 14,287
Intangible assets not subject to amortization, net 14,287 14,287
Database Rights [Member]    
Intangible assets subject to amortization 4,918 4,918
Intangible assets accumulated amortization 4,918 4,918
Intangible assets subject to amortization, net 0 0
Service Agreements [Member]    
Intangible assets subject to amortization 3,680 3,680
Intangible assets accumulated amortization 3,680 3,680
Intangible assets subject to amortization, net 0 0
Customer Relationships [Member]    
Intangible assets subject to amortization 32,442 32,442
Intangible assets accumulated amortization 16,458 13,630
Intangible assets subject to amortization, net $ 15,984 $ 18,812