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Goodwill and Other Intangible Assets - Goodwill Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]      
Balance at beginning of period $ 32,511 $ 33,659  
Effect of Ctrack South Africa divestiture (10,734)    
Effect of change in foreign currency exchange rates   (1,441) $ (1,148)
Balance at end of period $ 20,336 $ 32,511 $ 33,659