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Note 2 - Certificates of Deposit
 9 Months Ended
Sep. 30, 2020
Notes to Financial Statements  
Certificates Of Deposit Disclosure[Text Block]
Note
2:
      Certificates of Deposit

The Company has certificates of deposit for investment purposes. Certificates of deposit have maturities greater than 
three
 months when purchased, in amounts 
not
 greater than 
$250,000.
 All certificates of deposit are held until maturity and recorded at cost which approximates fair value. Certificates of deposit mature through the
fourth
quarter of
2020.
Total certificates of deposit were
$1,193,604
and
$2,697,000
as of
September 30, 2020
and
December 31, 2019,
respectively. Purchases of certificates of deposit were
$1,985,767
and
$1,468,000
for the
nine
months ended
September 30, 2020
and
2019,
respectively. Proceeds from the maturity of certificates of deposit were
$3,489,163
and
$2,390,000
for the
nine
months ended
September 30, 2020
and
2019,
respectively.