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LOANS - Loans Individually Evaluated for Impairment by Portfolio Segment of Loans (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consumer Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	$ 524	$ 964	$ 524	$ 964
Unpaid Principal Balance	596	1,036	596	1,036
Related Allowance	114	69	114	69
Average Recorded Investment	497	974	334	712
Interest Income Recognized	7	3	11	8
Agricultural Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	88		88
Unpaid Principal Balance	88		88
Related Allowance	9		9
Average Recorded Investment	88		66
Interest Income Recognized
Agricultural [Member]
Impaired Loans By Type [Line Items]
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Investment
Interest Income Recognized
Commercial Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	571	807	571	807
Unpaid Principal Balance	818	1,231	818	1,231
Related Allowance	219		219
Average Recorded Investment	878	827	929	869
Interest Income Recognized
Commercial and Industrial [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	378	2,745	378	2,745
Unpaid Principal Balance	378	2,745	378	2,745
Related Allowance	81	383	81	383
Average Recorded Investment	416	2,745	2,138	1,507
Interest Income Recognized		7	1	10
Consumer [Member]
Impaired Loans By Type [Line Items]
Recorded Investment
Unpaid Principal Balance		4		4
Related Allowance
Average Recorded Investment				3
Interest Income Recognized
With no related allowance recorded [Member] | Consumer Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	152	573	152	573
Unpaid Principal Balance	224	645	224	645
Related Allowance
Average Recorded Investment	224	485	162	285
Interest Income Recognized	6	2	7	7
With no related allowance recorded [Member] | Agricultural Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Investment
Interest Income Recognized
With no related allowance recorded [Member] | Agricultural [Member]
Impaired Loans By Type [Line Items]
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Investment
Interest Income Recognized
With no related allowance recorded [Member] | Commercial Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	101	207	101	207
Unpaid Principal Balance	101	384	101	384
Related Allowance
Average Recorded Investment	364	207	536	207
Interest Income Recognized
With no related allowance recorded [Member] | Commercial and Industrial [Member]
Impaired Loans By Type [Line Items]
Recorded Investment		365		365
Unpaid Principal Balance		365		365
Related Allowance
Average Recorded Investment		365	198	162
Interest Income Recognized
With no related allowance recorded [Member] | Consumer [Member]
Impaired Loans By Type [Line Items]
Recorded Investment
Unpaid Principal Balance		4		4
Related Allowance
Average Recorded Investment
Interest Income Recognized
With a specific allowance recorded [Member] | Consumer Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	372	391	372	391
Unpaid Principal Balance	372	391	372	391
Related Allowance	114	69	114	69
Average Recorded Investment	273	489	172	427
Interest Income Recognized	1	1	4	1
With a specific allowance recorded [Member] | Agricultural Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	88		88
Unpaid Principal Balance	88		88
Related Allowance	9		9
Average Recorded Investment	88		66
Interest Income Recognized
With a specific allowance recorded [Member] | Agricultural [Member]
Impaired Loans By Type [Line Items]
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Investment
Interest Income Recognized
With a specific allowance recorded [Member] | Commercial Real Estate [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	470	600	470	600
Unpaid Principal Balance	717	847	717	847
Related Allowance	219		219
Average Recorded Investment	514	620	393	662
Interest Income Recognized
With a specific allowance recorded [Member] | Commercial and Industrial [Member]
Impaired Loans By Type [Line Items]
Recorded Investment	378	2,380	378	2,380
Unpaid Principal Balance	378	2,380	378	2,380
Related Allowance	81	383	81	383
Average Recorded Investment	416	2,380	1,940	1,345
Interest Income Recognized		7	1	10
With a specific allowance recorded [Member] | Consumer [Member]
Impaired Loans By Type [Line Items]
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Investment				3
Interest Income Recognized

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- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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