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Goodwill (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Goodwill [Roll Forward]      
Net balance at beginning of period $ 93,684,000 $ 90,514,000  
Acquisition during the period   600,000  
Net foreign currency translation (1,319,000) 2,570,000  
Net balance at ending of period 92,365,000 93,684,000 $ 90,514,000
Goodwill impairment 0 0 0
Security Solutions      
Goodwill [Roll Forward]      
Net balance at beginning of period 72,791,000 70,782,000  
Acquisition during the period   0  
Net foreign currency translation (1,031,000) 2,009,000  
Net balance at ending of period 71,760,000 72,791,000 70,782,000
Digital Agreements      
Goodwill [Roll Forward]      
Net balance at beginning of period 20,893,000 19,732,000  
Acquisition during the period   600,000  
Net foreign currency translation (288,000) 561,000  
Net balance at ending of period $ 20,605,000 $ 20,893,000 $ 19,732,000