Maturities of Time Deposits (Detail) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Time Deposits [Line Items]
12 months or less, Interest rate	76.30%	92.30%
13 to 24 months, Interest rate	14.00%	5.40%
25 to 36 months, Interest rate	3.90%	1.10%
Over 36 months, Interest rate	5.80%	1.20%
Total Interest rate	100.00%	100.00%
Weighted average rate on certificate of deposits	1.24%	1.68%
12 months or less, Amount	$ 293,579,515	$ 387,751,183
13 to 24 months, Amount	53,750,152	22,973,538
25 to 36 months, Amount	14,845,083	4,433,641
Over 36 months, Amount	22,392,207	4,876,668
Total Time Deposits	$ 384,566,957	$ 420,035,030