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Borrowings - Convertible Notes, Narrative (Details)
3 Months Ended
Mar. 31, 2024
USD ($)
$ / shares
Nov. 02, 2022
USD ($)
$ / shares
Mar. 31, 2024
USD ($)
$ / shares
Aug. 15, 2023
USD ($)
Mar. 14, 2023
USD ($)
Dec. 09, 2022
USD ($)
Dec. 06, 2022
USD ($)
Nov. 04, 2022
USD ($)
Jun. 07, 2019
USD ($)
Aug. 31, 2018
USD ($)
Aug. 30, 2018
USD ($)
Aug. 20, 2018
USD ($)
Debt Instrument [Line Items]                        
Face amount $ 300,000,000   $ 300,000,000                  
2022 Convertible Notes                        
Debt Instrument [Line Items]                        
Increases in dividend in excess (in dollars per share) | $ / shares $ 0.30   $ 0.30                  
Conversion price (in dollars per share) | $ / shares $ 13.79 $ 14.20 13.79                  
Conversion rate 72.5249 70.4225                    
Minimum | 2022 Convertible Notes                        
Debt Instrument [Line Items]                        
Conversion price (in dollars per share) | $ / shares $ 12.38   $ 12.38                  
Maximum | 2022 Convertible Notes                        
Debt Instrument [Line Items]                        
Conversion rate     80.7754                  
Convertible Notes | 2018 Convertible Notes                        
Debt Instrument [Line Items]                        
Face amount                 $ 86,250,000 $ 115,000,000 $ 15,000,000 $ 100,000,000
Stated interest rate 5.75%   5.75%                  
Maximum purchase amount               $ 201,250,000        
Purchase amount per $1,000 principal amount               $ 1        
Purchase amount             $ 84,434,000          
Outstanding balance       $ 116,816,000   $ 116,816,000            
Convertible Notes | 2022 Convertible Notes                        
Debt Instrument [Line Items]                        
Face amount   $ 200,000,000     $ 60,000,000              
Stated interest rate 7.50%   7.50%                  
Outstanding balance $ 260,000,000   $ 260,000,000                  
Redemption as a percentage of principal     100.00%