CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flow from operating activities:
Net income	$ 45,516,447	$ 43,486,022
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	707,720	866,997
Amortization of loan costs and discounts	431,437	248,462
Provision for loan losses	56,016,554	52,896,383
Amortization of convertible note discount	0	1,819,600
Depreciation	3,083,921	3,210,782
Deferred income tax benefit	(7,130,570)	(3,786,627)
Compensation related to stock option and restricted stock plans	3,810,220	3,070,440
Unrealized gains on interest rate swap	0	(210,260)
Change in accounts:
Other assets, net	(292,766)	1,162,445
Income taxes payable	(4,963,192)	(2,392,532)
Accounts payable and accrued expenses	(2,985,014)	(2,468,123)
Net cash provided by operating activities	94,194,757	97,903,589
Cash flows from investing activities:
Increase in loans receivable, net	(123,603,259)	(109,594,808)
Net assets acquired from office acquisitions, primarily loans	(1,045,264)	(1,794,118)
Increase in intangible assets from acquisitions	(361,061)	(386,991)
Purchases of property and equipment	(3,939,867)	(3,474,906)
Net cash used in investing activities	(128,949,451)	(115,250,823)
Cash flow from financing activities:
Proceeds from senior revolving notes payable, net	157,350,000	150,350,000
Increase in restricted cash	0	(77,000,000)
(Payments on)/proceeds from junior subordinated note payable	(50,000,000)	20,000,000
Proceeds from exercise of stock options	3,355,695	2,070,760
Repurchase of common stock	(75,141,185)	(73,062,561)
Excess tax benefits from exercise of stock options	1,099,228	462,974
Net cash provided by financing activities	36,663,738	22,821,173
Increase in cash and cash equivalents	1,909,044	5,473,939
Effects of foreign currency fluctuations on cash	27,145	(443,616)
Cash and cash equivalents at beginning of period	10,768,176	8,030,580
Cash and cash equivalents at end of period	$ 12,704,365	$ 13,060,903