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Fair Value Measurements - Financial Assets and Liabilities (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2022
Apr. 30, 2019
Dec. 31, 2022
Dec. 31, 2021
Sep. 30, 2022
Mar. 31, 2019
Financial assets:            
Other investments $ 39,220   $ 39,220 $ 16,500 $ 24,220  
Carrying Value            
Financial assets:            
Other investments 39,220   39,220 16,500 24,220  
Estimated Fair Value            
Financial assets:            
Other investments 39,220   39,220 16,500 24,220  
Estimated Fair Value | Level 1            
Financial assets:            
Other investments 0   0 0 0  
Estimated Fair Value | Level 2            
Financial assets:            
Other investments 0   0 0 0  
Estimated Fair Value | Level 3            
Financial assets:            
Other investments 39,220   $ 39,220 $ 16,500 $ 24,220  
2.89% promissory note receivable due April 2024            
Financial assets:            
Notes receivable, fair value   $ 1,100       $ 1,100
Financial liabilities:            
Interest on note receivable   2.89% 2.89% 2.89% 2.89%  
2.89% promissory note receivable due April 2024 | Carrying Value            
Financial assets:            
Notes receivable, fair value 1,224   $ 1,224 $ 1,190 $ 1,215  
2.89% promissory note receivable due April 2024 | Estimated Fair Value            
Financial assets:            
Notes receivable, fair value 1,224   1,224 1,190 1,215  
2.89% promissory note receivable due April 2024 | Estimated Fair Value | Level 1            
Financial assets:            
Notes receivable, fair value 0   0 0 0  
2.89% promissory note receivable due April 2024 | Estimated Fair Value | Level 2            
Financial assets:            
Notes receivable, fair value 0   0 0 0  
2.89% promissory note receivable due April 2024 | Estimated Fair Value | Level 3            
Financial assets:            
Notes receivable, fair value 1,224   1,224 1,190 1,215  
12.00% promissory note receivable from Founders            
Financial assets:            
Notes receivable, fair value $ 15,000   $ 15,000      
Financial liabilities:            
Interest on note receivable 12.00%   12.00%      
12.00% promissory note receivable from Founders | Carrying Value            
Financial assets:            
Notes receivable, fair value $ 15,100   $ 15,100      
12.00% promissory note receivable from Founders | Estimated Fair Value            
Financial assets:            
Notes receivable, fair value 15,100   15,100      
12.00% promissory note receivable from Founders | Estimated Fair Value | Level 1            
Financial assets:            
Notes receivable, fair value 0   0      
12.00% promissory note receivable from Founders | Estimated Fair Value | Level 2            
Financial assets:            
Notes receivable, fair value 0   0      
12.00% promissory note receivable from Founders | Estimated Fair Value | Level 3            
Financial assets:            
Notes receivable, fair value 15,100   15,100      
Investments in unconsolidated affiliates | Carrying Value            
Financial assets:            
Investments in unconsolidated affiliates 37,789   37,789 42,513 37,733  
Investments in unconsolidated affiliates | Estimated Fair Value            
Financial assets:            
Investments in unconsolidated affiliates 43,497   43,497 52,671 40,279  
Investments in unconsolidated affiliates | Estimated Fair Value | Level 1            
Financial assets:            
Investments in unconsolidated affiliates 43,497   43,497 45,650 40,279  
Investments in unconsolidated affiliates | Estimated Fair Value | Level 2            
Financial assets:            
Investments in unconsolidated affiliates 0   0 0 0  
Investments in unconsolidated affiliates | Estimated Fair Value | Level 3            
Financial assets:            
Investments in unconsolidated affiliates 0   0 7,021 0  
2024 Convertible Notes | Carrying Value            
Financial liabilities:            
Debt instruments, fair value 34,143   34,143 142,106 142,575  
2024 Convertible Notes | Estimated Fair Value            
Financial liabilities:            
Debt instruments, fair value 35,851   35,851 147,063 157,727  
2024 Convertible Notes | Estimated Fair Value | Level 1            
Financial liabilities:            
Debt instruments, fair value 0   0 0 0  
2024 Convertible Notes | Estimated Fair Value | Level 2            
Financial liabilities:            
Debt instruments, fair value 35,851   35,851 147,063 157,727  
2024 Convertible Notes | Estimated Fair Value | Level 3            
Financial liabilities:            
Debt instruments, fair value 0   0 0 0  
2025 Convertible Notes | Carrying Value            
Financial liabilities:            
Debt instruments, fair value 102,192   102,192 169,738 170,328  
2025 Convertible Notes | Estimated Fair Value            
Financial liabilities:            
Debt instruments, fair value 89,883   89,883 155,060 147,488  
2025 Convertible Notes | Estimated Fair Value | Level 1            
Financial liabilities:            
Debt instruments, fair value 0   0 0 0  
2025 Convertible Notes | Estimated Fair Value | Level 2            
Financial liabilities:            
Debt instruments, fair value 89,883   89,883 155,060 147,488  
2025 Convertible Notes | Estimated Fair Value | Level 3            
Financial liabilities:            
Debt instruments, fair value 0   0 $ 0 $ 0  
2029 Convertible Notes | Carrying Value            
Financial liabilities:            
Debt instruments, fair value 222,649   222,649      
2029 Convertible Notes | Estimated Fair Value            
Financial liabilities:            
Debt instruments, fair value 225,975   225,975      
2029 Convertible Notes | Estimated Fair Value | Level 1            
Financial liabilities:            
Debt instruments, fair value 0   0      
2029 Convertible Notes | Estimated Fair Value | Level 2            
Financial liabilities:            
Debt instruments, fair value 225,975   225,975      
2029 Convertible Notes | Estimated Fair Value | Level 3            
Financial liabilities:            
Debt instruments, fair value $ 0   $ 0