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INCOME TAXES (Tables)
 3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]  
Schedule of income tax provisions
Income tax provisions consisted of the following (in thousands):
 
 
Three Months Ended March 31,
 
 
2019
 
2018
Income (loss) before provision for income taxes
 
$
(10,901
)
 
$
70,336

Provision for income taxes
 
$
(115
)
 
$
(453
)
Effective tax rate
 
(1.1
)%
 
0.6
%