XML 44 R34.htm IDEA: XBRL DOCUMENT v3.21.2
Note 13 - Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
      

Fair Value Measurements at September 30, 2021

(In thousands)

 
  

Fair Value at

September 30,

2021

  

Quoted Prices in

Active Markets for

Identical Assets

(Level 1)

  

Significant Other

Observable Inputs

(Level 2)

  

Significant

Unobservable

Inputs

(Level 3)

 
Recurring                
Marketable securities                
U.S. Treasury notes $266,892  $266,892  $  $ 
U.S. Government-sponsored enterprise securities  119,347   119,347       
                 
Other                
Liability-classified restricted stock awards  (904)  (904)      
Derivative warrant liability  (35)        (35)
Total $385,300  $385,335  $  $(35)
                 

Nonrecurring

                

Corn and palladium

 $

504

  $504  $  $ 
 
      

Fair Value Measurements at December 31, 2020

(In thousands)

 
  

Fair Value at

December 31,

2020

  

Quoted Prices in

Active Markets for

Identical Assets

(Level 1)

  

Significant Other

Observable Inputs

(Level 2)

  

Significant

Unobservable

Inputs

(Level 3)

 

Recurring

                

Derivative Warrant Liability

 $31  $  $  $31 
                 

Nonrecurring

               

Corn and palladium and finished goods inventory

 $866  $235  $631  $ 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Fair Value Measurements Using Significant Unobservable Inputs

(Level 3)

 
  

Derivative Warrant Liability 

 
     

Balance, December 31, 2020

 $31 
     

Total loss included in earnings

  4 
     
Balance, September 30, 2021 $35 
Schedule of Realized Gain (Loss) [Table Text Block]

Sales proceeds

$34,332 

Amortized cost

 (34,365
    

Realized (loss)

$(34)
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]
  September 30, 2021 
  Carrying Value  Estimated Fair Value 
         
2021 Bonds  $68,155   $69,075 
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]
     

Available-for-Sale Securities at September 30, 2021

 
 Maturity 

Amortized Cost Basis

  

Gross Unrealized Losses

  

Fair Value

 
              
Short-term marketable securities             
U.S. Treasury notesWithin one year $233,552  $(178) $233,374 
U.S. Government-sponsored enterprise securitiesWithin one year  51,911   (49)  51,862 
Total  $285,463  $(227) $285,236 
              

Long-term marketable securities

             
U.S Treasury notesWithin two years $33,532  $(15) $33,517 
U.S. Government-sponsored enterprise securitiesWithin two years  67,540   (54)  67,486 
Total  $101,072  $(69) $101,003