v3.26.1
Allowance for Credit Losses and Credit Quality Information - Nonaccrual (Details) - USD ($)
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Financing Receivable, Nonaccrual [Line Items]      
Uncollected accrued interest reversed $ (29,127,193) $ (27,379,667) $ (26,521,836)
Financing receivable, nonaccrual 73,309,983 78,233,996  
Interest income recognized 12,175,333 11,533,317 13,189,848
Nonaccrual status      
Financing Receivable, Nonaccrual [Line Items]      
Unearned interest, insurance and fees (22,531,096) (23,775,911)  
0 to 5 months      
Financing Receivable, Nonaccrual [Line Items]      
Uncollected accrued interest reversed (7,813,423) (5,983,271) (5,337,474)
Financing receivable, nonaccrual 23,611,680 19,169,040  
Interest income recognized 1,090,263 791,235 1,024,573
6 to 17 months      
Financing Receivable, Nonaccrual [Line Items]      
Uncollected accrued interest reversed (3,691,985) (2,960,850) (3,251,451)
Financing receivable, nonaccrual 10,432,434 8,510,132  
Interest income recognized 1,072,224 986,271 1,522,705
18 to 35 months      
Financing Receivable, Nonaccrual [Line Items]      
Uncollected accrued interest reversed (2,421,881) (3,025,057) (3,382,070)
Financing receivable, nonaccrual 7,455,208 10,024,500  
Interest income recognized 1,283,231 1,495,744 1,730,680
36 to 59 months      
Financing Receivable, Nonaccrual [Line Items]      
Uncollected accrued interest reversed (2,626,135) (3,272,098) (4,056,209)
Financing receivable, nonaccrual 9,463,186 12,151,649  
Interest income recognized 1,550,305 1,837,922 2,364,522
60+ Months      
Financing Receivable, Nonaccrual [Line Items]      
Uncollected accrued interest reversed (12,573,769) (12,138,391) (10,494,632)
Financing receivable, nonaccrual 44,878,571 52,154,586  
Interest income recognized $ 7,179,310 $ 6,422,145 $ 6,547,368