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CREDIT FACILITY AND LONG-TERM DEBT CREDIT FACILITY AND LONG-TERM DEBT (Tables)
 12 Months Ended
Dec. 31, 2019
Debt Disclosure [Abstract]  
Convertible Debt
The following table summarizes the net carrying amount of the Notes as of December 31, 2019 (in thousands):

December 31, 2019
Carrying amount of equity component
$
39,508



Principal amount of the Notes
86,250

Unamortized debt discount
(40,902
)
Net carrying amount
$
45,348