LONG-TERM DEBT - Summary of Long-Term Debt (Detail) (USD $)	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Tier One Capital Limitation Percentage	25.00%
Amount
Federal Home Loan Bank	$ 10,745,000	$ 11,544,000
National Market Repurchase Agreement	65,000,000	65,000,000
Total long-term debt	75,745,000	76,544,000
Average Rate
Federal Home Loan Bank	3.79%	3.80%
National Market Repurchase Agreement	3.50%	3.50%
Total long-term debt	3.54%	3.55%
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount	$ 161,800,000