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Fair Value of Financial Instruments
3 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments
Note 12— Fair Value of Financial Instruments
The following tables present the carrying amount and estimated fair value of our financial instruments recognized at fair value on a recurring basis:
 
 
March 31, 2020
 
 
 
 
Estimated Fair Value Measurements
 
 
Carrying Amount
 
Quoted Prices in Active Markets (Level 1)
 
Significant Other Observable Inputs
(Level 2)
 
Significant Unobservable Inputs
(Level 3)
Assets -
 
 
 
 
 
 
 
 
Marketable securities
 
$
8,984

 
$
8,984

 
$

 
$

 
 
December 31, 2019
 
 
 
 
Estimated Fair Value Measurements
 
 
Carrying Amount
 
Quoted Prices in Active Markets (Level 1)
 
Significant Other Observable Inputs
(Level 2)
 
Significant Unobservable Inputs
(Level 3)
Assets -
 
 
 
 
 
 
 
 
Marketable securities
 
$
10,433

 
$
10,433

 
$

 
$


Our cash, cash equivalents and restricted cash, accounts receivable, marketable securities and accounts payable are by their nature short-term. As a result, the carrying values included in our Condensed Consolidated Balance Sheets approximate fair value.