CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flow from operating activities:
Net income	$ 67,630,875	$ 66,190,438
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	822,107	1,036,916
Amortization of loan costs and discounts	295,655	406,812
Provision for loan losses	108,006,774	93,411,187
Depreciation	4,708,254	4,683,781
Deferred income tax benefit	(10,037,348)	(9,773,789)
Compensation related to stock option and restricted stock plans	11,596,771	6,735,222
Change in accounts:
Other assets, net	(692,803)	(1,815,636)
Income taxes payable	(7,357,996)	(6,362,166)
Accounts payable and accrued expenses	27,438	1,458,764
Net cash provided by operating activities	174,999,727	155,971,529
Cash flows from investing activities:
Increase in loans receivable, net	(230,060,722)	(224,259,715)
Net assets acquired from office acquisitions, primarily loans	(774,549)	(1,263,798)
Purchases of property and equipment	(5,432,662)	(5,355,655)
Increase in intangible assets from acquisitions	(281,437)	(424,192)
Net cash used in investing activities	(236,549,370)	(231,303,360)
Cash flow from financing activities:
Borrowings from senior note payable	346,140,000	401,600,466
Payments on senior note payable	(163,140,000)	(138,150,466)
(Payments on)/proceeds from junior subordinated note payable	0	(50,000,000)
Proceeds from exercise of stock options	6,706,128	7,120,171
Repurchase of common stock	(121,995,651)	(141,020,900)
Excess tax benefits from exercise of stock options	1,940,209	2,262,766
Net cash provided by financing activities	69,650,686	81,812,037
Increase in cash and cash equivalents	8,101,043	6,480,206
Effects of foreign currency fluctuations on cash	(338,654)	(74,029)
Cash and cash equivalents at beginning of period	11,625,365	10,768,176
Cash and cash equivalents at end of period	$ 19,387,754	$ 17,174,353