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Goodwill - Goodwill Activity (Details) - USD ($)
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Goodwill [Roll Forward]    
Net balance at beginning of period $ 90,514,000  
Foreign currency exchange rate effect 2,179,000  
Additions during the period 601,000  
Net balance at end of period 93,294,000  
Goodwill impairment 0 $ 0
Digital Agreements    
Goodwill [Roll Forward]    
Net balance at beginning of period 19,732,000  
Foreign currency exchange rate effect 475,000  
Additions during the period 601,000  
Net balance at end of period 20,808,000  
Security Solutions    
Goodwill [Roll Forward]    
Net balance at beginning of period 70,782,000  
Foreign currency exchange rate effect 1,704,000  
Additions during the period 0  
Net balance at end of period $ 72,486,000