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Note 6 - Fair Value (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
  

June 30, 2024

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 
  

(In thousands)

 

Debt investments

 $—  $—  $609,068  $609,068 

Warrant investments

  —   328   21,131   21,459 

Other investments

  —   —   9,183   9,183 

Equity investments

  302   —   6,850   7,152 

Total investments

 $302  $328  $646,232  $646,862 
  

December 31, 2023

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 
  

(In thousands)

 

Debt investments

 $—  $—  $670,172  $670,172 

Warrant investments

  —   1,619   22,975   24,594 

Other investments

  —   —   6,430   6,430 

Equity investments

  608   —   7,281   7,889 

Total investments

 $608  $1,619  $706,858  $709,085 
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

June 30, 2024

 
  

Fair

 

Valuation Techniques/

 

Unobservable

   

Weighted

 

Investment Type

 

Value

 

Methodologies

 

Input

 

Range

 

Average(1)

 
     

(Dollars in thousands, except per share data)

      

Debt investments

 $556,542 

Discounted Expected Future Cash Flows

 

Hypothetical Market Yield

 

12% – 25%

  15%
              
   52,526 

Multiple Probability Weighted Cash Flow Model

 

Probability Weighting

 

5% - 100%

  64%
              

Warrant investments

  21,069 

Black-Scholes Valuation Model

 

Price Per Share

 

0.00 –1,898.58

 $74.78 
       

Average Industry Volatility

 

25%

  25%
       

Marketability Discount

 

0 - 20%

  17%
       

Estimated Time to Exit (in years)

 1 to 5  3 
   62 

Expected Proceeds

 

Price Per Share

 $0.25 $0.25 
              

Other investments

  9,183 

Multiple Probability Weighted Cash Flow Model

 

Discount Rate

 

25%

  25%
       

Probability Weighting

 

30% – 100%

  75%
              

Equity investments

  6,850 

Last Equity Financing

 

Price Per Share

 

0.00 –215.03

 $22.31 
              

Total Level 3 investments

 $646,232          

December 31, 2023

 
  

Fair

 

Valuation Techniques/

 

Unobservable

   

Weighted

 

Investment Type

 

Value

 

Methodologies

 

Input

 

Range

 

Average(1)

 
     

(Dollars in thousands, except per share data)

      

Debt investments

 $617,529 

Discounted Expected Future Cash Flows

 

Hypothetical Market Yield

 11% – 24%  15%
              
   52,643 

Multiple Probability Weighted Cash Flow Model

 

Probability Weighting

 20% - 100%  50%
              

Warrant investments

  22,913 

Black-Scholes Valuation Model

 

Price Per Share

 

0.00 –1,899.00

 $64.95 
       

Average Industry Volatility

 25%  25%
       

Marketability Discount

 0 - 20%  18%
       

Estimated Time to Exit (in years)

 1 to 5  3 
   62 

Expected Proceeds

 

Price Per Share

 $0.25 $0.25 
              

Other investments

  6,430 

Multiple Probability Weighted Cash Flow Model

 

Discount Rate

 25%  25%
       

Probability Weighting

 30% – 100%  81%
              

Equity investments

  7,281 

Last Equity Financing

 

Price Per Share

 

0.56 –215.03

 $17.15 
              

Total Level 3 investments

 $706,858          
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Three months ended June 30, 2024

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

 $670,773  $23,156  $6,825  $9,192  $709,946 

Purchase of investments

  11,605   —   500   (40)  12,065 

Warrants received and classified as Level 3

  —   1,089   —   —   1,089 

Principal payments received on investments

  (56,906)  —   —   493   (56,413)

Payment-in-kind interest on investments

  355   —   —   —   355 

Proceeds from sale of investments

  (3)  (4)  —   (40)  (47)

Net realized gain on investments

  3   2,617   —   40   2,660 

Unrealized depreciation included in earnings

  (17,501)  (3,046)  (3,156)  (462)  (24,165)

Transfer out of warrant investments

  —   (2,681)  2,681   —   — 

Other

  742   —   —   —   742 

Level 3 assets, end of period

 $609,068  $21,131  $6,850  $9,183  $646,232 
  

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 
  

Six months ended June 30, 2024

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

 $670,172  $22,975  $7,281  $6,430  $706,858 

Purchase of investments

  33,782   —   1,250   352   35,384 

Warrants received and classified as Level 3

  —   1,217   —   —   1,217 

Principal payments received on investments

  (75,986)  —   —   (70)  (76,056)

Payment-in-kind interest on investments

  1,737   —   —   —   1,737 

Proceeds from sale of investments

  (44)  (4)  —   (40)  (88)

Net realized gain (loss) on investments

  41   2,600   —   40   2,681 

Unrealized depreciation included in earnings

  (19,010)  (2,976)  (4,362)  (720)  (27,068)

Transfer out of debt and warrant investments

  (3,191)  (2,681)  2,681   3,191   — 

Other

  1,567   —   —   —   1,567 

Level 3 assets, end of period

 $609,068  $21,131  $6,850  $9,183  $646,232 
  

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