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Fair Value Measurements
6 Months Ended
Jun. 30, 2022
Fair Value Measurements [Abstract]  
Fair Value Measurements
10.
Fair Value Measurements

In accordance with ASC 820 (Fair Value Measurements and Disclosures), the Company uses various inputs to measure the outstanding warrants and certain embedded conversion features associated with a convertible debt on a recurring basis to determine the fair value of the liability.

The following table classifies the Company’s liabilities measured at fair value on a recurring basis into the fair value hierarchy as of June 30, 2022 and December 31, 2021 (in thousands):

   
Fair value measured at June 30, 2022
 
   
Fair value at
June 30, 2022
   
Quoted prices in
active markets
(Level 1)
   
Significant other
observable inputs
(Level 2)
   
Significant
unobservable inputs
(Level 3)
 
Warrant liability
 
$
5,295
   
$
-
   
$
-
   
$
5,295
 
Embedded conversion option
   
218
     
-
     
-
     
218
 
Total fair value
   
5,513
     
-
     
-
     
5,513
 

   
Fair value measured at December 31, 2021
 
   
Fair value at
December 31, 2021
   
Quoted prices in
active markets
(Level 1)
   
Significant other
observable inputs
(Level 2)
   
Significant
unobservable inputs
(Level 3)
 
Warrant liability
 
$
9,614
     
-
     
-
     
9,614
 
Embedded conversion option
   
6,255
     
-
     
-
     
6,255
 
Total fair value
   
15,869
     
-
     
-
     
15,869
 

There were no transfers between Level 1, 2 or 3 during the three and six months ended June 30, 2022 and 2021.

The following table presents changes in Level 3 liabilities measured at fair value for the six months ended June 30, 2022. Both observable and unobservable inputs were used to determine the fair value of positions that the Company has classified within the Level 3 category. Unrealized gains and losses associated with liabilities within the Level 3 category include changes in fair value that were attributable to both observable (e.g. changes in market interest rates) and unobservable (e.g., changes in unobservable long-dated volatilities) inputs (dollars in thousands):

   
Warrant
Liability
   
Conversion
Feature
   
Total
 
Balance at December 31, 2021
 
$
9,614
   
$
6,255
   
$
15,869
 
Cashless exercise
   
(2,167
)
   
-
     
(2,167
)
Warrants issued
   
3,168
     
-
     
3,168
 
Change in fair value
   
(5,320
)
   
(6,037
)
   
(11,357
)
Balance at June 30, 2022
 
$
5,295
   
$
218
   
$
5,513
 

A summary of the warrant liability activity for the six months ended June 30, 2022 is as follows:

   
Warrants
Outstanding
   
Fair Value
per Share
   
Fair Value
 
Balance at December 31, 2021
   
62,617,188
   
$
0.15
   
$
9,614,134
 
Warrants classified as liabilities
   
(15,000,000
)
   
0.14
     
(2,167,022
)
Warrants issued
   
21,874,302
     
0.14
     
3,168,581
 
Gain on remeasurement of warrant liability
   
-
             
(5,320,470
)
Balance at June 30, 2022
   
69,491,490
   
$
0.08
   
$
5,295,223
 

Significant inputs related to the Company’s liability classified warrants are listed below.

   
June 30,
2022
   
December 31,
2021
   
New Issuance
at Issue Date
 
Weighted average remaining life in years
   
5.21
     
4.67
     
6.89
 
Weighted average volatility
   
325
%
   
116
%
   
276
%
Weighted average risk free interest rate
   
3.0
%
   
1.2
%
   
3.0
%
Expected dividend yield
   
0.00
%
   
0.00
%
   
0.00
%