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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2023
Fair Value Measurements [Abstract]  
Fair Value, Warrants Measured on Recurring Basis

The following table reconciles the beginning and ending balances of the Company’s Level 3 recurring assets for the three and six months ended June 30, 2023 and 2022 (in thousands):

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Three Months Ended

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Six Months Ended

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June 30, 

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June 30, 

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2023

    

2022

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2023

    

2022

Fair value of warrants at beginning of period

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$

136

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$

143

​

$

138

​

$

142

Unrealized gain (loss) on fair value adjustment for warrants

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-

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1

​

 

(2)

​

 

2

Fair value of warrants at end of period

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$

136

​

$

144

​

$

136

​

$

144

Summary of Valuation Techniques and Significant Unobservable Inputs Used

The following table summarizes the valuation techniques and significant unobservable inputs used for the Company’s recurring and non-recurring fair value calculation/adjustments categorized as Level 3 in the fair value hierarchy at June 30, 2023 and December 31, 2022:

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June 30, 2023

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Valuation 

    

Valuation

    

Unobservable

    

Range of Input Values

Name

​

Frequency

​

Technique

​

Inputs

​

(Weighted Average)

Warrants

 

Recurring

 

Black-Scholes formulation

 

Stock price

​

$0.01 - $11.71 ($0.07)

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Exercise price

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$0.02 - $9.00 ($0.07)

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Time to maturity (in years)

 

4.41 - 8.45 (4.58)

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Annualized volatility

 

41.87% - 83.00% (52.34%)

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December 31, 2022

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Valuation 

    

Valuation

    

Unobservable

    

Range of Input Values

Name

​

Frequency

​

Technique

​

Inputs

​

(Weighted Average)

Warrants

 

Recurring

 

Black-Scholes formulation

 

Stock price

​

$0.01 - $11.71 ($0.07)

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Exercise price

​

$0.02 - $9.00 ($0.07)

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Time to maturity (in years)

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4.91 - 8.94 (5.07)

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Annualized volatility

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41.18% - 83.00% (51.34%)

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Estimated Fair Values of Financial Instruments

The following tables present estimated fair values of the Company’s financial instruments in accordance with the guidance provided by the Financial Instruments Topic of the FASB Accounting Standards Codification at June 30, 2023 and December 31, 2022 (in thousands):

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Fair Value Measurements at June 30, 2023

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Carrying

    

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Amount

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Level 1

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Level 2

​

Level 3

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Total

Financial assets:

 

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​

  

 

​

  

 

​

  

 

​

  

Cash and cash equivalents

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$

1,825

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$

1,825

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$

-

​

$

-

​

$

1,825

Investment in equity securities

​

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19

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19

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-

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-

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19

Warrants, fair value

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136

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-

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-

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136

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136

Financial liabilities:

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​

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Non-recourse debt

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​

848

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-

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-

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​

824

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824

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Fair Value Measurements at December 31, 2022

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Carrying

    

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Amount

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Level 1

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Level 2

​

Level 3

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Total

Financial assets:

 

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​

  

 

​

  

 

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Cash and cash equivalents

​

$

2,644

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$

2,644

​

$

-

​

$

-

​

$

2,644

Investment in equity securities

​

 

21

​

​

21

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-

​

​

-

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21

Warrants, fair value

​

​

138

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-

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-

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138

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138

Financial liabilities:

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​

​

​

​

​

​

​

​

​

​

​

​

​

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Non-recourse debt

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1,115

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-

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-

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1,086

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1,086