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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2021
Income Tax Disclosure [Abstract]  
Provision For Income Taxes And Effective Income Tax Rate Table Text Block [Table Text Block]
The (benefit) provision for income taxes and the effective income tax rates were as follows (dollars in thousands):
 
     Three Months Ende
d
    Nine Months Ended  
 
 
September 30,
 
 
September 30,
 
                          
     2021     2020     2021     2020  
                          
(Benefit) provision for income taxes
   $ (886)     $ 651     $ (30)     $ (249)  
Effective income tax rate
     (7.2)%       10.1%       (0.1)%       (3.8)%