CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash flow from operating activities:
Net income	$ 63,067,857	$ 57,013,003
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	1,281,910	1,496,661
Amortization of loan costs and discounts	280,043	317,662
Provision for loan losses	89,005,511	78,935,264
Amortization of convertible note discount	1,819,600	2,748,803
Depreciation	4,773,549	4,443,265
Deferred income tax benefits	(6,683,729)	(4,364,057)
Compensation related to stock option and restricted stock plans	4,897,230	3,941,794
Unrealized gains on interest rate swap	(319,235)	(920,537)
Change in accounts:
Other assets	(104,144)	(1,341,635)
Income taxes payable	(7,583,342)	(5,932,008)
Accounts payable and accrued expenses	(137,087)	1,997,396
Net cash provided by operating activities	150,298,163	138,335,611
Cash flows from investing activities:
Increase in loans receivable, net	(210,760,223)	(202,048,635)
Net assets acquired from office acquisitions, primarily loans	(2,419,787)	(2,919,688)
Increase in intangible assets from acquisitions	(640,570)	(709,273)
Purchases of property and equipment, net	(4,752,260)	(4,807,311)
Net cash used in investing activities	(218,572,840)	(210,484,907)
Cash flow from financing activities:
Proceeds from senior revolving notes payable, net	196,665,000	79,450,000
Repayment of the convertible senior subordinated notes payable	(77,000,000)	0
Proceeds from junior subordinated note payable	20,000,000	30,000,000
Loan cost associated with junior subordinated note payable	0	(487,500)
Proceeds from exercise of stock options	8,460,809	5,429,903
Repurchase of common stock	(73,983,889)	(35,941,141)
Excess tax benefit from exercise of stock options	914,886	1,077,055
Net cash provided by financing activities	75,056,806	79,528,317
Increase in cash and cash equivalents	6,782,129	7,379,021
Effects of foreign currency fluctuations on cash	(547,186)	39,329
Cash and cash equivalents at beginning of period	8,030,580	5,445,168
Cash and cash equivalents at end of period	$ 14,265,523	$ 12,863,518