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Debt - Offering of Senior Notes (Details) - Senior Notes - Senior Notes Due June 30, 2026
Oct. 25, 2021
USD ($)
Jun. 30, 2021
USD ($)
senior_note
$ / shares
Sep. 30, 2021
USD ($)
Debt Instrument [Line Items]      
Principal amount   $ 120,000,000  
Interest rate, as a percent   8.375%  
Par value (in dollars per share) | $ / shares   $ 25.00  
Amount issued inclusive of underwriters' option to purchase   $ 125,000,000  
Amount issued to underwriters   $ 5,000,000  
Principal amount redeemed   100.00%  
Percentage of debt holders demand full repayment on debt default amount   25.00%  
Long-term debt fair value     $ 124,100,000
Subsequent Event      
Debt Instrument [Line Items]      
Principal amount $ 18,000,000    
Interest rate, as a percent 8.375%    
Sales agent compensation, percentage 2.00%    
On or after June 30, 2022 and prior to June 30, 2023      
Debt Instrument [Line Items]      
Debt instrument, redemption price (in dollars per share) | senior_note   25.75  
On or after June 30, 2023 and prior to June 30, 2024      
Debt Instrument [Line Items]      
Debt instrument, redemption price (in dollars per share)   25.50  
On or after June 30, 2024 and prior to June 30, 2025      
Debt Instrument [Line Items]      
Debt instrument, redemption price (in dollars per share)   25.25