CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Interest and fee income	$ 115,299,196	$ 107,348,505
Insurance commissions and other income	17,536,688	15,807,557
Total revenues	132,835,884	123,156,062
Expenses:
Provision for loan losses	23,614,890	22,839,114
General and administrative expenses:
Personnel	48,413,019	44,635,223
Occupancy and equipment	8,642,649	8,219,111
Advertising	2,644,635	2,783,259
Amortization of intangible assets	368,680	432,789
Other	9,090,128	8,442,909
Total general and administrative expenses	69,159,111	64,513,291
Interest expense	3,926,154	3,383,870
Total expenses	96,700,155	90,736,275
Income before income taxes	36,135,729	32,419,787
Income taxes	13,520,731	12,237,689
Net income	$ 22,614,998	$ 20,182,098
Net income per common share:
Basic (in dollars per share)	$ 1.66	$ 1.30
Diluted (in dollars per share)	$ 1.63	$ 1.27
Weighted average common shares outstanding:
Basic (in shares)	13,614,838	15,481,814
Diluted (in shares)	13,901,933	15,918,044