CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share		$ 0.51	$ 0.66
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share		$ 0.52	$ 0.67
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	$ (3.98)
Revenues:
Interest and fee income	$ 469,154,277	$ 435,701,503	$ 427,870,816
Insurance commissions and other income	75,388,648	66,966,829	62,950,604
Total revenues	544,542,925	502,668,332	490,821,420
Expenses:
Provision for loan losses	148,426,578	117,620,140	119,095,712
General and administrative expenses:
Personnel	180,823,031	164,496,081	158,575,057
Occupancy and equipment	41,303,547	39,113,729	38,091,999
Advertising	22,494,946	21,195,718	16,557,146
Amortization of intangible assets	1,527,656	990,399	489,836
Other	42,154,535	43,311,742	30,559,588
Total general and administrative expenses	288,303,715	269,107,669	244,273,626
Interest expense	17,934,060	19,089,635	21,504,208
Total expenses	454,664,353	405,817,444	384,873,546
Income before income taxes	89,878,572	96,850,888	105,947,874
Income taxes	15,981,057	47,757,808	38,157,492
Net income	$ 37,235,134	$ 53,690,018	$ 73,600,294
Net income per common share:
Basic (in dollars per share)	$ 4.14	$ 6.11	$ 8.45
Diluted (in dollars per share)	$ 4.05	$ 5.99	$ 8.38
Weighted average common shares outstanding:
Basic (in shares)	8,994,036	8,791,168	8,705,658
Diluted (in shares)	9,204,377	8,958,676	8,778,044
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 73,897,515	$ 49,093,080
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	2,341,825	4,353,617	$ 8,049,257
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	(38,377,623)	0	0
Discontinued Operation, Tax Effect of Discontinued Operation	626,583	(243,321)	2,239,345
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	$ (36,662,381)	$ 4,596,938	$ 5,809,912
Income (Loss) from Continuing Operations, Per Basic Share	$ 8.22	$ 5.58	$ 7.79
Income (Loss) from Continuing Operations, Per Diluted Share	8.03	$ 5.48	$ 7.72
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	$ (4.08)