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Fair Value of Financial Instruments
 6 Months Ended
Jun. 30, 2022
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments Fair Value of Financial Instruments
The carrying values and the estimated fair values of debt financial instruments were as follows (in thousands):
June 30, 2022December 31, 2021
Carrying ValueFair ValueCarrying ValueFair Value
Convertible Notes$412,808 $299,506 $411,863 $410,771 

The carrying values of the Revolving Credit Facility recorded in long-term debt on the condensed consolidated balance sheets approximate fair value due to the variable interest rate. The fair value of the Convertible Notes is estimated using Level 2 inputs, as they are not registered securities nor listed on any securities exchange but may be traded by qualified institutional buyers.