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Short-Term and Long-Term Investments (Tables)
12 Months Ended
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Summary of Investment
Details of our investments are as follows (in thousands):
 
 
  
December 31, 2022
 
 
  
Cash and

Cash

Equivalents
 
  
Short-Term

Investments
 
  
Long-Term

Investments
 
Measured at fair value:
  
  
  
Available-for-sale
debt securities:
  
  
  
Money Market Funds
   $ 143,274      $      $  
Failed Auction Security
                   2,622  
    
 
 
    
 
 
    
 
 
 
Total
     143,274               2,622  
       
Other measurement basis:
                          
Cash on hand
     47,337                
    
 
 
    
 
 
    
 
 
 
Total
   $ 190,611      $      $ 2,622  
    
 
 
    
 
 
    
 
 
 
 
 
  
December 31, 2021
 
 
  
Cash and

Cash

Equivalents
 
  
Short-Term

Investments
 
  
Long-Term

Investments
 
Measured at fair value:
  
  
  
Available-for-sale
debt securities:
  
  
  
Money Market Funds
   $ 94,282      $      $  
U.S. Treasury Obligations
            45,215         
Failed Auction Security
                   2,639  
    
 
 
    
 
 
    
 
 
 
Total
     94,282        45,215        2,639  
       
Other measurement basis:
                          
Cash on hand
     88,136                
    
 
 
    
 
 
    
 
 
 
Total
   $ 182,418      $ 45,215      $ 2,639  
    
 
 
    
 
 
    
 
 
 
Summary of Available-for-Sale Securities
The following is a summary of the
available-for-sale
securities (in thousands):
 
December 31, 2022
  
Cost
 
  
Gross

Unrealized

Gains
 
  
Gross

Unrealized

Losses
 
  
Estimated

Fair

Value
 
Failed Auction Security
   $ 3,000      $      $ 378      $ 2,622  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2021
                                   
U.S. Treasury Obligations
   $ 45,238      $      $ 23      $ 45,215  
Failed Auction Security
     3,000               361        2,639  
Cost and Estimated Fair Value of Failed Auction Security by Contractual Maturities
The amortized cost and estimated fair value of the
a
vailabl
e-for-sale
securities on December 31, 2022, by type and contractual maturities, are shown below (in thousands):
Failed Auction Security:
  
  
 
  
Cost
 
  
Estimated Fair

Value
 
Due in twenty years
   $ 3,000      $ 2,622