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Summary of Significant Accounting Policies - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance $ 94,596 $ 139,050
Other comprehensive income (loss) (150) (443)
Ending balance 22,113 122,938
Foreign Currency Translation Adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (907)  
Other comprehensive income (loss) (150)  
Ending balance (1,057)  
Unrealized Gain (Loss) on Investments    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance 0  
Other comprehensive income (loss) 0  
Ending balance 0  
Accumulated Other Comprehensive Income (Loss)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (907) 112
Other comprehensive income (loss) (150) (443)
Ending balance $ (1,057) $ (331)