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Income Taxes - Additional Information (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards, subject to expiration $ 7,400,000  
Net operating loss carryforwards, not subject to expiration 20,600,000  
Liability for uncertain tax positions 0 $ 0
Accrued interest and penalties related to uncertain tax positions 0 $ 0
Unremitted earnings of foreign subsidiaries 4,700,000  
Federal    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards 28,000,000.0  
State    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards 14,100,000  
Foreign Tax Authority | Cyprus    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards 28,800,000  
Foreign Tax Authority | Poland    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards $ 1,000,000.0