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INCOME TAXES (Tables)
3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]  
Summary of Benefit from Income Taxes and Discrete Tax Items
Effective income tax rate
 
Three Months Ended
March 31,
(Dollars in thousands)
2019
 
2018
Benefit from income taxes
$
(8,300
)
 
$
(4,222
)
Effective income tax rate
22
%
 
(53
)%