8. ALLOWANCE FOR LOAN AND LEASE LOSSES (Detail) - (Table 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Provision		$ 410	$ 200	$ 1,365
Commercial Portfolio Segment [Member]
Beginning Balance	1,279	1,065	1,351	1,536
Provision	(89)	(75)	(247)	(395)
Loans charged-off	(28)	(151)	(39)	(302)
Recoveries	3	15	100	15
Ending balance	1,165	854	1,165	854
Ending balance:
Allowance individually evaluated for impairment	579		579		480
Ending balance:
Allowance collectively evaluated for impairment	586		586		871
Ending balance	24,606		24,606		30,811
Ending balance:
Allowance individually evaluated for impairment	2,143		2,143		2,828
Ending balance:
Allowance collectively evaluated for impairment	22,463		22,463		27,983
Commercial Real Estate Portfolio Segment [Member]
Beginning Balance	2,584	3,079	2,526	3,156
Provision	184	25	586	728
Loans charged-off	(121)	(279)	(476)	(1,124)
Recoveries	12	71	23	136
Ending balance	2,659	2,896	2,659	2,896
Ending balance:
Allowance individually evaluated for impairment	877		877		786
Ending balance:
Allowance collectively evaluated for impairment	1,782		1,782		1,740
Ending balance	182,540		182,540		180,126
Ending balance:
Allowance individually evaluated for impairment	21,114		21,114		19,105
Ending balance:
Allowance collectively evaluated for impairment	161,426		161,426		161,021
Multi-Family Real Estate Portfolio Segment [Member]
Beginning Balance	247	263	238	198
Provision	7	52	16	122
Loans charged-off				(8)
Recoveries				3
Ending balance	254	315	254	315
Ending balance:
Allowance individually evaluated for impairment	115		115		122
Ending balance:
Allowance collectively evaluated for impairment	139		139		116
Ending balance	11,847		11,847		9,155
Ending balance:
Allowance individually evaluated for impairment	1,658		1,658		1,681
Ending balance:
Allowance collectively evaluated for impairment	10,189		10,189		7,474
Construction Real Estate Portfolio Segment [Member]
Beginning Balance	422	371	594	582
Provision	102	379	(70)	228
Loans charged-off		(295)		(377)
Recoveries				22
Ending balance	524	455	524	455
Ending balance:
Allowance individually evaluated for impairment
Ending balance:
Allowance collectively evaluated for impairment	524		524		594
Ending balance	7,856		7,856		6,918
Ending balance:
Allowance individually evaluated for impairment	252		252		263
Ending balance:
Allowance collectively evaluated for impairment	7,604		7,604		6,655
Residential Portfolio Segment [Member]
Beginning Balance	554	502	477	609
Provision	(11)	30	104	36
Loans charged-off	(20)	(54)	(58)	(167)
Recoveries	41		41
Ending balance	564	478	564	478
Ending balance:
Allowance individually evaluated for impairment	239		239		179
Ending balance:
Allowance collectively evaluated for impairment	325		325		298
Ending balance	18,350		18,350		17,701
Ending balance:
Allowance individually evaluated for impairment	3,336		3,336		2,429
Ending balance:
Allowance collectively evaluated for impairment	15,014		15,014		15,272
Finance Leases Portfolio Segment [Member]
Beginning Balance	3	1	3	79
Provision	(1)	2	(1)	(74)
Loans charged-off		(1)		(9)
Recoveries				6
Ending balance	2	2	2	2
Ending balance:
Allowance individually evaluated for impairment
Ending balance:
Allowance collectively evaluated for impairment	2		2		3
Ending balance	1,040		1,040		1,509
Ending balance:
Allowance individually evaluated for impairment
Ending balance:
Allowance collectively evaluated for impairment	1,040		1,040		1,509
Agriculture Portfolio Segment [Member]
Beginning Balance	91	206	87	167
Provision	(15)	16	(11)	257
Loans charged-off				(202)
Recoveries
Ending balance	76	222	76	222
Ending balance:
Allowance individually evaluated for impairment
Ending balance:
Allowance collectively evaluated for impairment	76		76		87
Ending balance	3,123		3,123		3,340
Ending balance:
Allowance individually evaluated for impairment
Ending balance:
Allowance collectively evaluated for impairment	3,123		3,123		3,340
Consumer Portfolio Segment [Member]
Beginning Balance	170	376	262	348
Provision	(7)	(47)	(94)	463
Loans charged-off		(2)	(5)	(494)
Recoveries		19		29
Ending balance	163	346	163	346
Ending balance:
Allowance individually evaluated for impairment	27		27		28
Ending balance:
Allowance collectively evaluated for impairment	136		136		234
Ending balance	6,176		6,176		8,569
Ending balance:
Allowance individually evaluated for impairment	169		169		247
Ending balance:
Allowance collectively evaluated for impairment	6,007		6,007		8,322
Unallocated Porfolio Segment [Member]
Beginning Balance	330	338	243	366
Provision	(170)	28	(83)
Loans charged-off
Recoveries
Ending balance	160	366	160	366
Ending balance:
Allowance individually evaluated for impairment
Ending balance:
Allowance collectively evaluated for impairment	160		160		243
Ending balance
Ending balance:
Allowance individually evaluated for impairment
Ending balance:
Allowance collectively evaluated for impairment
Total [ Member]
Beginning Balance	5,680	6,201	5,781	7,041
Provision		410	200	1,365
Loans charged-off	(169)	(782)	(578)	(2,683)
Recoveries	56	105	164	211
Ending balance	5,567	5,934	5,567	5,934
Ending balance:
Allowance individually evaluated for impairment	1,837		1,837		1,595
Ending balance:
Allowance collectively evaluated for impairment	3,730		3,730		4,186
Ending balance	255,538		255,538		258,129
Ending balance:
Allowance individually evaluated for impairment	28,672		28,672		26,553
Ending balance:
Allowance collectively evaluated for impairment	$ 226,866		$ 226,866		$ 231,576