CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Interest and fee income	$ 142,213,442	$ 130,311,649	$ 403,201,740	$ 367,428,701
Insurance commissions and other income	18,280,069	19,327,915	52,520,477	54,445,073
Total revenues	160,493,511	149,639,564	455,722,217	421,873,774
Expenses:
Provision for loan losses	41,115,932	37,394,633	108,006,774	93,411,187
General and administrative expenses:
Personnel	49,393,327	48,319,205	151,837,113	141,401,829
Occupancy and equipment	9,702,506	9,109,693	28,773,715	26,890,979
Advertising	7,316,674	6,535,782	13,089,315	11,981,428
Amortization of intangible assets	244,940	329,196	822,107	1,036,916
Other	10,640,905	10,503,986	30,001,379	28,803,845
Total general and administrative expenses	77,298,352	74,797,862	224,523,629	210,114,997
Interest expense	5,545,956	4,403,866	15,503,201	12,396,058
Total expenses	123,960,240	116,596,361	348,033,604	315,922,242
Income before income taxes	36,533,271	33,043,203	107,688,613	105,951,532
Income taxes	13,579,366	12,369,212	40,057,738	39,761,094
Net income	$ 22,953,905	$ 20,673,991	$ 67,630,875	$ 66,190,438
Net income per common share:
Basic (in dollars per share)	$ 2.05	$ 1.61	$ 5.83	$ 5.04
Diluted (in dollars per share)	$ 1.98	$ 1.58	$ 5.65	$ 4.93
Weighted average common shares outstanding:
Basic (in shares)	11,203,826	12,837,327	11,610,318	13,144,131
Diluted (in shares)	11,592,638	13,100,289	11,970,066	13,431,268