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INCOME TAXES (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Income Tax Disclosure [Abstract]          
Benefit due to lower estimated annual effective income tax rate $ 3,600        
Income tax provision (benefit) (14,823) $ (18,242) $ (62,142) $ (15,887)  
Reduction in the Transition Tax   $ 9,200      
Unrecognized tax benefits, including interest and penalties 68,300   68,300   $ 52,300
Increase to unrecognized tax benefits, inclding interest, due principally to research credits     16,000    
Unrecognized tax benefits, if subsequently recognized would reduce income tax expense 63,500   63,500   $ 49,100
Decrease in unrecognized tax benefit, reasonably possible within twelve months 24,500   24,500    
Decrease in unrecognized tax benefit, reasonably possible within twelve months which would reduce the income tax provision $ 24,300   $ 24,300