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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Income Tax Disclosure [Abstract]    
Effective rate of income tax (percentage) 11.00% 11.40%
U.K. statutory tax rate (percentage) 19.00%  
Income tax benefit $ 3,696 $ 3,421
Deferred tax assets $ 400