Summary of Significant Accounting Policies (Additional Disclosures) (Details)	12 Months Ended
	Mar. 31, 2019 USD ($) states segments	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Finite-Lived Intangible Assets [Line Items]
Number of reportable segments | segments	1
Fair Value of Financial Instruments [Abstract]
Average loan life	8 months
Income Taxes [Abstract]
Income tax position, likelihood of being sustained (in hundredths)	50.00%
Concentration of Risk [Abstract]
Number of states in which entity operates | states	16
Number of states with largest concentration of revenue | states	4
Concentration Risk, Percentage	57.00%	53.00%	53.00%
Advertising Costs [Abstract]
Advertising | $	$ 22,494,946	$ 21,195,718	$ 16,557,146
Number of Reporting Units | segments	1
Customer lists [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life (in years)	13 years 3 months
Customer lists [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life (in years)	8 years
Customer lists [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life (in years)	23 years
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life (in years)	4 years 9 months 18 days
Noncompete Agreements [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life (in years)	3 years
Noncompete Agreements [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, useful life (in years)	5 years 3 months 18 days