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Note 6 - Fair Value (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
  

June 30, 2023

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 
  

(In thousands)

 

Debt investments

 $  $  $683,309  $683,309 

Warrant investments

     1,107   24,376   25,483 

Other investments

        1,300   1,300 

Equity investments

  1,040      4,259   5,299 

Total investments

 $1,040  $1,107  $713,244  $715,391 
  

December 31, 2022

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 
  

(In thousands)

 

Debt investments

 $  $  $686,458  $686,458 

Warrant investments

     3,567   26,145   29,712 

Other investments

        1,300   1,300 

Equity investments

  140      2,416   2,556 

Total investments

 $140  $3,567  $716,319  $720,026 
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

June 30, 2023

 
  

Fair

 

Valuation Techniques/

 

Unobservable

   

Weighted

 

Investment Type

 

Value

 

Methodologies

 

Input

 

Range

 

Average(1)

 
     

(Dollars in thousands, except per share data)

      

Debt investments

 $611,524 

Discounted Expected Future Cash Flows

 

Hypothetical Market Yield

 

11% – 24%

  14%
              
   71,785 

Multiple Probability Weighted Cash Flow Model

 

Probability Weighting

 

5% - 100%

  50%
              

Warrant investments

  24,314 

Black-Scholes Valuation Model

 

Price Per Share

 

0.000 –1,89999

 $59.21 
       

Average Industry Volatility

 

28%

  28%
       

Marketability Discount

 

20%

  20%
       

Estimated Time to Exit (in years)

 1 to 5  3 
   62 

Expected Proceeds

 

Price Per Share

 $0.25 $0.25 
              

Other investments

  1,300 

Multiple Probability Weighted Cash Flow Model

 

Discount Rate

 

25%

  25%
       

Probability Weighting

 

100%

  100%
              

Equity investments

  4,259 

Last Equity Financing

 

Price Per Share

 

$0.03– $215.03

 $27.56 
              

Total Level 3 investments

 $713,244          

December 31, 2022

 
  

Fair

 

Valuation Techniques/

 

Unobservable

   

Weighted

 

Investment Type

 

Value

 

Methodologies

 

Input

 

Range

 

Average(1)

 
     

(Dollars in thousands, except per share data)

      

Debt investments

 $669,617 

Discounted Expected Future Cash Flows

 

Hypothetical Market Yield

 3% – 22%  14%
              
   16,545 

Multiple Probability Weighted Cash Flow Model

 

Probability Weighting

 10% - 75%  31%
              
   296 

Convertible Note Analysis

 

Price Per Share

 $168.93 $168.93 
              

Warrant investments

  26,145 

Black-Scholes Valuation Model

 

Price Per Share

 

0.000 –1.89999

 $58.52 
       

Average Industry Volatility

 28%  28%
       

Marketability Discount

 20%  20%
       

Estimated Time to Exit (in years)

 1 to 5  3 
              

Other investments

  1,300 

Multiple Probability Weighted Cash Flow Model

 

Discount Rate

 25%  25%
       

Probability Weighting

 100%  100%
              

Equity investments

  2,416 

Last Equity Financing

 

Price Per Share

 

$1.00– $215.03

 $26.93 
              

Total Level 3 investments

 $716,319          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Three months ended June 30, 2023

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

 $684,554  $24,638  $2,915  $1,300  $713,407 

Purchase of investments

  40,545            40,545 

Warrants and equity received and classified as Level 3

     515   89      604 

Principal payments received on investments

  (24,740)           (24,740)

Payment-in-kind interest on investments

  950            950 

Proceeds from sale of investments

  (528)  (1,458)        (1,986)

Net realized (loss) gain on investments

  (17,672)  1,287   (127)     (16,512)

Unrealized appreciation (depreciation) included in earnings

  2,118   (606)  (1,307)     205 

Transfer out of Level 3

        (111)     (111)

Transfer out of debt investments

  (2,800)     2,800       

Other

  882            882 

Level 3 assets, end of period

 $683,309  $24,376  $4,259  $1,300  $713,244 
  

Three months ended June 30, 2022

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

 $492,194  $21,645  $203  $200  $514,242 

Purchase of investments

  158,985      250      159,235 

Warrants received and classified as Level 3

     669         669 

Principal payments received on investments

  (73,096)        (232)  (73,328)

Proceeds from sale of investments

  (21,750)  (396)        (22,146)

Net realized gain (loss) on investments

     239      (1,168)  (929)

Unrealized (depreciation) appreciation included in earnings

  (3,797)  3,010      1,400   613 

Other

  (976)           (976)

Level 3 assets, end of period

 $551,560  $25,167  $453  $200  $577,380 
  

Six months ended June 30, 2023

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

 $686,458  $26,145  $2,416  $1,300  $716,319 

Purchase of investments

  87,543      10      87,553 

Warrants and equity received and classified as Level 3

     656   89      745 

Principal payments received on investments

  (64,496)           (64,496)

Payment-in-kind interest on investments

  2,154            2,154 

Proceeds from sale of investments

  (7,036)  (1,470)        (8,506)

Net realized (loss) gain on investments

  (17,665)  1,146   (127)     (16,646)

Unrealized depreciation included in earnings

  (2,448)  (2,096)  (1,118)     (5,662)

Transfer out of Level 3

        (111)     (111)

Transfer out of debt investments

  (3,095)  (5)  3,100       

Other

  1,894            1,894 

Level 3 assets, end of period

 $683,309  $24,376  $4,259  $1,300  $713,244 
  

Six months ended June 30, 2022

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

 $437,317  $19,837  $203  $200  $457,557 

Purchase of investments

  253,470      250      253,720 

Warrants received and classified as Level 3

     1,477         1,477 

Principal payments received on investments

  (87,191)        (282)  (87,473)

Proceeds from sale of investments

  (43,000)  (426)        (43,426)

Net realized gain (loss) on investments

     269      (1,168)  (899)

Unrealized (depreciation) appreciation included in earnings

  (6,967)  4,010      1,450   (1,507)

Other

  (2,069)           (2,069)

Level 3 assets, end of period

 $551,560  $25,167  $453  $200  $577,380