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Note 13 - Warrants and Options
 12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Share-based Payment Arrangement [Text Block]
NOTE
13
. WARRANTS AND OPTIONS
 
Options
 
At
December 
31,
2019
and
2018,
we had fully vested options outstanding to purchase
314,218
 and
234,218,
respectively, of shares of common stock at exercise prices ranging from $
3.27
to $
134.00
per share.
 
Due to the high level of volatility in the stock price of our common stock, our management determined the grant date fair value of the options granted during the year ended
December 31, 2019
using the then quoted stock price at the grant date. There were
no
options granted during
2018.
 
Warrants
 
At
December 31, 2019
and
2018,
we had warrants outstanding to purchase
728,583
shares of common stock. At
December 31, 2019
the warrants had a weighted average exercise price of
$6.18
per share purchased and a weighted average remaining contractual term o
f
3.00
 years. At
December 31, 2018,
the warrants had a weighted average exercise price of
$6.18
per share purchased and a weighted average remaining contractual term of
4.00
years.
 
Non-Incentive Plan Options
 
At
December 31, 2019
and
2018,
we had
323,498
non-incentive options outstanding with a weighted-average exercise price of
$
21.84
,
 
with a remaining contract term of
.92
 
years at
December 31, 2019
and with a remaining contract term of
1.92
years at
December 31, 2018.
 
These options were out of the money at
December 31, 2019 
and
2018
 and had
no
intrinsic value.