CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flow from operating activities:
Net income	$ 44,676,970	$ 45,516,447
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	577,167	707,720
Amortization of loan costs and discounts	227,820	431,437
Provision for loan losses	66,890,842	56,016,554
Depreciation	3,173,420	3,083,921
Deferred income tax benefit	(7,204,662)	(7,130,570)
Compensation related to stock option and restricted stock plans	8,774,815	3,810,220
Change in accounts:
Other assets, net	252,764	(292,766)
Income taxes payable	(7,863,237)	(4,963,192)
Accounts payable and accrued expenses	(3,496,040)	(2,985,014)
Net cash provided by operating activities	106,009,859	94,194,757
Cash flows from investing activities:
Increase in loans receivable, net	(121,930,478)	(123,603,259)
Net assets acquired from office acquisitions, primarily loans	(717,063)	(1,045,264)
Purchases of property and equipment	(3,424,236)	(3,939,867)
Increase in intangible assets from acquisitions	(276,437)	(361,061)
Net cash used in investing activities	(126,348,214)	(128,949,451)
Cash flow from financing activities:
Borrowings from senior note payable	195,940,000	255,000,466
Payments on senior note payable	(109,340,000)	(97,650,466)
(Payments on)/proceeds from junior subordinated note payable	0	(50,000,000)
Proceeds from exercise of stock options	1,451,678	3,355,695
Repurchase of common stock	(65,058,684)	(75,141,185)
Excess tax benefits from exercise of stock options	509,408	1,099,228
Net cash provided by financing activities	23,502,402	36,663,738
Increase in cash and cash equivalents	3,164,047	1,909,044
Effects of foreign currency fluctuations on cash	(300,179)	27,145
Cash and cash equivalents at beginning of period	11,625,365	10,768,176
Cash and cash equivalents at end of period	$ 14,489,233	$ 12,704,365