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Income Tax - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Income Taxes [Line Items]      
Deferred tax liabilities $ 1,123,000 $ 259,000  
Income tax rates 8.90% 10.30% 12.50%
Subsidiaries      
Disclosure Of Income Taxes [Line Items]      
Deferred tax liabilities $ 0 $ 0  
Malta      
Disclosure Of Income Taxes [Line Items]      
Income tax rates 5.00% 35.00% 30.00%
Tax rate effect from change in tax rate 5.00% 35.00% 35.00%