Allowance for Credit Losses and Credit Quality Information (Payment Performance On A Contractual Basis) (Details) - USD ($)	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	$ 1,104,746,261	$ 1,209,871,366
Loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	1,041,554,654
Financing receivable, between 1 and 2 years ago	52,109,459
Financing receivable, between 2 and 3 years ago	2,527,702
Financing receivable, between 3 and 4 years ago	202,144
Financing receivable, between 4 and 5 years ago	33,223
Financing receivable, more than 5 years ago	3,068
Loans | Consumer Loan
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	1,096,430,250
Loans | 30-60 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	21,862,634
Financing receivable, between 1 and 2 years ago	2,011,261
Financing receivable, between 2 and 3 years ago	153,417
Financing receivable, between 3 and 4 years ago	21,426
Financing receivable, between 4 and 5 years ago	3,500
Financing receivable, more than 5 years ago	2,069
Gross loans receivable	24,054,307
Loans | 61-90 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	18,039,010
Financing receivable, between 1 and 2 years ago	1,208,936
Financing receivable, between 2 and 3 years ago	88,119
Financing receivable, between 3 and 4 years ago	11,800
Financing receivable, between 4 and 5 years ago	571
Financing receivable, more than 5 years ago	0
Gross loans receivable	19,348,436
Loans | 91 days or more past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	31,126,328
Financing receivable, between 1 and 2 years ago	3,120,210
Financing receivable, between 2 and 3 years ago	183,434
Financing receivable, between 3 and 4 years ago	14,028
Financing receivable, between 4 and 5 years ago	14,708
Financing receivable, more than 5 years ago	168
Gross loans receivable	34,458,876
Tax Advance Loan
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	8,269,742
Financing receivable, between 1 and 2 years ago	45,292
Financing receivable, between 2 and 3 years ago	977
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	8,316,011
Tax Advance Loan | 30-60 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	686,667
Financing receivable, between 1 and 2 years ago	1,423
Financing receivable, between 2 and 3 years ago	0
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	688,090
Tax Advance Loan | 61-90 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	0
Financing receivable, between 1 and 2 years ago	0
Financing receivable, between 2 and 3 years ago	321
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	321
Tax Advance Loan | 91 days or more past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	0
Financing receivable, between 1 and 2 years ago	34,509
Financing receivable, between 2 and 3 years ago	656
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	35,165
Performing Financing Receivables
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable		$ 1,104,130,714
Performing Financing Receivables | Loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	970,526,682
Financing receivable, between 1 and 2 years ago	45,769,052
Financing receivable, between 2 and 3 years ago	2,102,732
Financing receivable, between 3 and 4 years ago	154,890
Financing receivable, between 4 and 5 years ago	14,444
Financing receivable, more than 5 years ago	831
Performing Financing Receivables | Loans | Consumer Loan
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	1,018,568,631
Performing Financing Receivables | Tax Advance Loan
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	7,583,075
Financing receivable, between 1 and 2 years ago	9,360
Financing receivable, between 2 and 3 years ago	0
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	7,592,435
Contractual basis
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	1,104,746,261
Contractual basis | Loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	1,041,554,653
Financing receivable, between 1 and 2 years ago	52,109,459
Financing receivable, between 2 and 3 years ago	2,527,702
Financing receivable, between 3 and 4 years ago	202,145
Financing receivable, between 4 and 5 years ago	33,223
Financing receivable, more than 5 years ago	3,068
Contractual basis | Loans | Consumer Loan
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	1,096,430,250
Contractual basis | Loans | 30-60 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	29,300,148
Financing receivable, between 1 and 2 years ago	1,872,816
Financing receivable, between 2 and 3 years ago	72,187
Financing receivable, between 3 and 4 years ago	1,322
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	31,246,473
Contractual basis | Loans | 61-90 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	23,075,264
Financing receivable, between 1 and 2 years ago	1,363,196
Financing receivable, between 2 and 3 years ago	75,343
Financing receivable, between 3 and 4 years ago	567
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	24,514,370
Contractual basis | Loans | 91 days or more past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	40,825,388
Financing receivable, between 1 and 2 years ago	9,211,503
Financing receivable, between 2 and 3 years ago	858,024
Financing receivable, between 3 and 4 years ago	117,183
Financing receivable, between 4 and 5 years ago	31,433
Financing receivable, more than 5 years ago	2,237
Gross loans receivable	51,045,768
Contractual basis | Tax Advance Loan
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	8,269,742
Financing receivable, between 1 and 2 years ago	45,292
Financing receivable, between 2 and 3 years ago	977
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	8,316,011
Contractual basis | Tax Advance Loan | 30-60 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	686,667
Financing receivable, between 1 and 2 years ago	0
Financing receivable, between 2 and 3 years ago	0
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	686,667
Contractual basis | Tax Advance Loan | 61-90 days past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	0
Financing receivable, between 1 and 2 years ago	0
Financing receivable, between 2 and 3 years ago	0
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	0
Contractual basis | Tax Advance Loan | 91 days or more past due
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	0
Financing receivable, between 1 and 2 years ago	45,292
Financing receivable, between 2 and 3 years ago	977
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	46,269
Contractual basis | Performing Financing Receivables | Loans
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	948,353,853
Financing receivable, between 1 and 2 years ago	39,661,944
Financing receivable, between 2 and 3 years ago	1,522,148
Financing receivable, between 3 and 4 years ago	83,073
Financing receivable, between 4 and 5 years ago	1,790
Financing receivable, more than 5 years ago	831
Contractual basis | Performing Financing Receivables | Loans | Consumer Loan
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	989,623,639
Contractual basis | Performing Financing Receivables | Tax Advance Loan
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, up to 1 year ago	7,583,075
Financing receivable, between 1 and 2 years ago	0
Financing receivable, between 2 and 3 years ago	0
Financing receivable, between 3 and 4 years ago	0
Financing receivable, between 4 and 5 years ago	0
Financing receivable, more than 5 years ago	0
Gross loans receivable	$ 7,583,075