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Long-Term Debt - Real Estate Facilities (Details) - USD ($)
$ in Thousands
Oct. 27, 2022
Dec. 31, 2022
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Nov. 30, 2018
Long-term debt            
Total outstanding     $ 20,885 $ 20,885    
Real Estate Facilities | Secured Debt            
Long-term debt            
Interest rate (as a percent)     4.84%      
Additional borrowing capacity     $ 0      
First Real Estate Facility | Secured Debt            
Long-term debt            
Maximum borrowing capacity           $ 21,500
Total outstanding     4,000      
Second Real Estate Facility | Secured Debt            
Long-term debt            
Maximum borrowing capacity         $ 9,000  
Total outstanding     8,100      
Third Real Estate Facility | Secured Debt            
Long-term debt            
Maximum borrowing capacity       $ 10,100    
Total outstanding     $ 9,700      
2022 Real Estate Facility            
Long-term debt            
Maximum borrowing capacity $ 250,000          
Maximum borrowing capacity, increase in capacity $ 100,000          
Commitment fee (as a percent) 0.20%          
Total outstanding $ 0          
2022 Real Estate Facility | Forecast | Minimum            
Long-term debt            
Long-term debt   $ 100,000        
2022 Real Estate Facility | Forecast | Maximum            
Long-term debt            
Long-term debt   $ 150,000        
2022 Real Estate Facility | SOFR            
Long-term debt            
Variable rate spread (as a percent) 2.30%          
2022 Real Estate Facility | Federal Funds Effective Rate            
Long-term debt            
Variable rate spread (as a percent) 1.80%          
2022 Real Estate Facility | Prime Rate            
Long-term debt            
Variable rate spread (as a percent) 1.30%