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Credit Agreement - Narrative (Details) - Line of Credit - Wells Fargo Credit Facility - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Maximum borrowing capacity $ 230.0  
Maximum borrowing capacity, percentage of net finance receivables 70.00%  
Remaining borrowing capacity $ 149.4 $ 162.5
Interest rate at period end 7.52% 6.97%
Current borrowing capacity $ 80.6 $ 67.5