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INCOME TAXES (Tables)
6 Months Ended
Jun. 30, 2019
Income Tax Disclosure [Abstract]  
Summary of Benefit from Income Taxes and Discrete Tax Items
Effective income tax rate
 
Six Months Ended  
June 30,
(Dollars in thousands)
2019
 
2018
(Benefit from) income taxes
$
(25,638
)
 
$
(15,103
)
Effective income tax rate
30
%
 
113
%