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Note 5 - Fair Value Measurements
3 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Fair Value Disclosures [Text Block]
5.
FAIR VALUE MEASUREMENTS
 
The Company’s financial instruments consist principally of cash equivalents, short and long-term marketable securities, accounts receivable and accounts payable. The fair value of a financial instrument is the amount that would be received in an asset sale or paid to transfer a liability in an orderly transaction between unaffiliated market participants. Assets and liabilities measured at fair value are categorized based on whether or
not
the inputs are observable in the market and the degree that the inputs are observable. The categorization of financial instruments within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The hierarchy is prioritized into
three
levels (with Level
3
being the lowest) defined as follows:
 
Level
1:
     Inputs are based on quoted market prices for identical assets or liabilities in active markets at the measurement date.
 
Level
2:
     Inputs include quoted prices for similar assets or liabilities in active markets and/or quoted prices for identical or similar assets or liabilities in markets that are
not
active near the measurement date.
 
Level
3:
     Inputs include management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. The inputs are unobservable in the market and significant to the instrument’s valuation.
 
The fair value of the Company’s cash equivalents and marketable securities was determined based on Level
1
and Level
2
inputs. The Company did
not
have any marketable securities in the Level
3
category as of
December 31, 2019
or
September 30, 2019.
The Company believes that the recorded values of its other financial instruments approximate their current fair values because of their nature and respective relatively short maturity dates or durations.
 
Instruments Measured at Fair Value
 
The following tables present the Company’s cash equivalents and marketable securities’ costs, gross unrealized gains and losses, and fair value by major security type recorded as cash equivalents or short-term or long-term marketable securities as of
December 31, 2019
and
September 30, 2019.
 
   
December 31, 2019
 
   
Cost Basis
   
Unrealized
Gain
   
Fair Value
   
Cash
Equivalents
   
Short-term
Securities
   
Long-term
Securities
 
Level 1:
                                               
Money Market Funds
  $
254,408
    $
-
    $
254,408
    $
254,408
    $
-
    $
-
 
                                                 
Level 2:
                                               
Certificates of deposit
   
1,444,833
     
-
     
1,444,833
     
-
     
499,000
     
945,833
 
Municipal securities
   
270,221
     
453
     
270,674
     
-
     
270,674
     
-
 
Corporate bonds
   
3,404,812
     
7,423
     
3,412,235
     
-
     
3,412,235
     
-
 
Subtotal
   
5,119,866
     
7,876
     
5,127,742
     
-
     
4,181,909
     
945,833
 
                                                 
Total
  $
5,374,274
    $
7,876
    $
5,382,150
    $
254,408
    $
4,181,909
    $
945,833
 
 
 
 
   
September 30, 2019
 
   
Cost Basis
   
Unrealized
Gain
   
Fair Value
   
Cash
Equivalents
   
Short-term
Securities
   
Long-term
Securities
 
Level 1:
                                               
Money Market Funds
  $
275,538
    $
-
    $
275,538
    $
275,538
    $
-
    $
-
 
                                                 
Level 2:
                                               
Certificates of deposit
   
971,592
     
-
     
971,592
     
-
     
499,000
     
472,592
 
Municipal securities
   
240,463
     
205
     
240,668
     
-
     
80,336
     
160,332
 
Corporate bonds
   
3,856,766
     
11,157
     
3,867,923
     
-
     
3,116,028
     
751,895
 
Subtotal
   
5,068,821
     
11,362
     
5,080,183
     
-
     
3,695,364
     
1,384,819
 
                                                 
Total
  $
5,344,359
    $
11,362
    $
5,355,721
    $
275,538
    $
3,695,364
    $
1,384,819