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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
(Benefit) Provision for Income Taxes and Effective Income Tax Rates

The (benefit) provision for income taxes and the effective income tax rates for the three months ended March 31 were as follows (dollars in thousands):

 

     Three Months Ended  
     March 31,  
     2017     2016  

(Benefit) provision for income taxes

   $ (99   $ 22  

Effective income tax rate

     (9.4 )%      0.4