LONG-TERM DEBT - Summary of Long-Term Debt (Detail) (USD $)	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Tier One Capital Limitation Percentage	25.00%
Debt Instrument, Unused Borrowing Capacity, Amount	$ 162,300,000
Amount
Federal Home Loan Bank	10,120,000	11,544,000
National Market Repurchase Agreement	65,000,000	65,000,000
Total long-term debt	$ 75,120,000	$ 76,544,000
Average Rate
Federal Home Loan Bank	3.80%	3.80%
National Market Repurchase Agreement	3.50%	3.50%
Total long-term debt	3.54%	3.55%