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DEBT (Table)
 6 Months Ended
Jun. 30, 2020
Debt Disclosure [Abstract]  
Summary of the gross carrying amount, unamortized debt cost and net carrying value of the liability component of the Notes
A summary of the gross carrying amount, unamortized debt cost, debt issuance costs and net carrying value of the liability component of the 2022 Notes are as follows (in thousands):
 
June 30,
2020
 
December 31,
2019
Gross carrying amount
$
299,977

 
$
299,991

Unamortized debt discount
25,537

 
31,789

Debt issuance costs
3,062

 
3,811

Net carrying amount
$
271,378

 
$
264,391