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

September 30, 2023

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 
  

(In thousands)

 

Debt investments

 $  $  $679,838  $679,838 

Warrant investments

     956   25,233   26,189 

Other investments

        7,254   7,254 

Equity investments

  8,962      6,810   15,772 

Total investments

 $8,962  $956  $719,135  $729,053 
  

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]

September 30, 2023

 
  

Fair

 

Valuation Techniques/

 

Unobservable

   

Weighted

 

Investment Type

 

Value

 

Methodologies

 

Input

 

Range

 

Average(1)

 
     

(Dollars in thousands, except per share data)

      

Debt investments

 $607,193 

Discounted Expected Future Cash Flows

 

Hypothetical Market Yield

 

11% – 20%

  14%
              
   72,645 

Multiple Probability Weighted Cash Flow Model

 

Probability Weighting

 

20% - 100%

  50%
              

Warrant investments

  25,171 

Black-Scholes Valuation Model

 

Price Per Share

 

0.000 –1,89999

 $58.11 
       

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

  7,254 

Multiple Probability Weighted Cash Flow Model

 

Discount Rate

 

25%

  25%
       

Probability Weighting

 

30% – 100%

  83%
              

Equity investments

  6,810 

Last Equity Financing

 

Price Per Share

 

0.033 –215.0303

 $18.30 
              

Total Level 3 investments

 $719,135          

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 –1.8989

 $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 September 30, 2023

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

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

Purchase of investments

  66,185      750      66,935 

Warrants received and classified as Level 3

     1,294         1,294 

Principal payments received on investments

  (25,726)           (25,726)

Payment-in-kind interest on investments

  3,934            3,934 

Proceeds from sale of investments

  (2,528)  (23)  (6)     (2,557)

Net realized (loss) gain on investments

  (11,440)  (118)  6      (11,552)

Unrealized depreciation included in earnings

  (18,877)  (296)  (1,349)  (200)  (20,722)

Transfer out of Level 3

  (5,000)           (5,000)

Transfer out of debt investments

  (9,304)     3,150   6,154    

Other

  (715)           (715)

Level 3 assets, end of period

 $679,838  $25,233  $6,810  $7,254  $719,135 
  

Three months ended September 30, 2022

 
  

Debt

  

Warrant

  

Equity

  

Other

     
  

Investments

  

Investments

  

Investments

  

Investments

  

Total

 
  

(In thousands)

 

Level 3 assets, beginning of period

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

Purchase of investments

  94,627            94,627 

Warrants received and classified as Level 3

     964         964 

Principal payments received on investments

  (26,929)        (31)  (26,960)

Proceeds from sale of investments

  (6,088)  (38)        (6,126)

Net realized (loss) gain on investments

  (8,492)  266      31   (8,195)

Unrealized appreciation (depreciation) included in earnings

  8,095   (3,348)  (420)  (100)  4,227 

Transfer out of Level 3

     (1,117)        (1,117)

Transfer out of debt investments

  (3,200)     2,000   1,200    

Other

  (541)           (541)

Level 3 assets, end of period

 $609,032  $21,894  $2,033  $1,300  $634,259 
  

Nine months ended September 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

  153,728      760      154,488 

Warrants and equity received and classified as Level 3

     1,950   89      2,039 

Principal payments received on investments

  (90,222)           (90,222)

Payment-in-kind interest on investments

  6,088            6,088 

Proceeds from sale of investments

  (9,564)  (1,493)  (6)     (11,063)

Net realized (loss) gain on investments

  (29,105)  1,028   (121)     (28,198)

Unrealized depreciation included in earnings

  (21,325)  (2,392)  (2,467)  (200)  (26,384)

Transfer out of Level 3

  (5,000)     (111)     (5,111)

Transfer out of debt investments

  (12,399)  (5)  6,250   6,154    

Other

  1,179            1,179 

Level 3 assets, end of period

 $679,838  $25,233  $6,810  $7,254  $719,135 
  

Nine months ended September 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

  348,097      250      348,347 

Warrants received and classified as Level 3

     2,441         2,441 

Principal payments received on investments

  (114,120)        (313)  (114,433)

Proceeds from sale of investments

  (49,088)  (464)        (49,552)

Net realized (loss) gain on investments

  (8,492)  535      (1,137)  (9,094)

Unrealized appreciation (depreciation) included in earnings

  1,128   662   (420)  1,350   2,720 

Transfer out of Level 3

     (1,117)        (1,117)

Transfer out of debt investments

  (3,200)     2,000   1,200    

Other

  (2,610)           (2,610)

Level 3 assets, end of period

 $609,032  $21,894  $2,033  $1,300  $634,259