LONG-TERM DEBT - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2011 Minimum years	Sep. 30, 2011 Maximum years	Jul. 31, 2009 Peoples Agreement	Sep. 18, 2009 Irwin Agreements	Sep. 30, 2011 Business Combinations
Debt Disclosure [Line Items]
Repurchase agreements with a one-time call feature at the time of execution		$ 65,000,000
Weighted average rate on repurchase agreements		3.50%
Weighted average effective yield on assumed FHLB long-term advances		3.80%
Remaining maturities on repurchase agreements (in years)			1	4
FHLB long-term advances		11,875,000			63,500,000	216,300,000	1,800,000
Prepayments of FHLB long-term advances	$ 232,000,000
Remaining maturities on assumed FHLB long-term advances (in years)				8