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Note 5 - Fair Value of Financial Instruments
3 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Fair Value Disclosures [Text Block]
Note
5
- Fair Value of Financial Instruments
 
Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.
 
Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy is based on
three
levels of inputs, of which the
first
two
are considered observable and the last unobservable, as follows:
 
 
Level
1
– Quoted prices in active markets for identical assets and liabilities.
 
Level
2
– Inputs other than Level
1
that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are
not
active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
 
Level
3
– Unobservable inputs that are supported by little or
no
market activity and that are significant to the fair value of the assets or liabilities.
 
Fair Value on a Recurring Basis
 
The tables below categorize assets and liabilities measured at fair value on a recurring basis for the periods presented:
 
   
Fair Value
   
Fair value measurement using
 
   
March 31,
     
 
 
   
 
 
   
 
 
(in thousands)
 
2021
   
Level 1
   
Level 2
   
Level 3
 
                                 
Cash equivalents:
                               
Money market funds
  $
32,077
    $
32,077
    $
-
    $
-
 
U.S. Treasury notes
   
3,029
     
3,029
     
-
     
-
 
Total Assets
  $
35,106
    $
35,106
    $
-
    $
-
 
 
                                 
   
Fair Value
   
Fair value measurement using
 
   
December 31,
     
 
 
   
 
 
   
 
 
(in thousands)
 
2020
   
Level 1
   
Level 2
   
Level 3
 
                                 
Cash equivalents:
                               
Money market funds
  $
6,518
     
6,518
    $
-
    $
-
 
U.S. Treasury notes
   
9,101
     
9,101
     
-
     
-
 
Total Assets
  $
15,619
    $
15,619
    $
-
    $
-