8. ALLOWANCE FOR LOAN AND LEASE LOSSES (Detail) - (Table 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Pass [Member] | Finance Leases Portfolio Segment [Member]
Grade:
Loan and leases receivable	$ 1,882	$ 1,708
Pass [Member] | Agriculture Portfolio Segment [Member]
Grade:
Loan and leases receivable	2,882	3,416
Pass [Member] | Consumer Portfolio Segment [Member]
Grade:
Loan and leases receivable	7,820	9,684
Pass [Member] | Total [ Member]
Grade:
Loan and leases receivable	217,378	241,127
Watch [Member] | Agriculture Portfolio Segment [Member]
Grade:
Loan and leases receivable		570
Watch [Member] | Consumer Portfolio Segment [Member]
Grade:
Loan and leases receivable	688	237
Watch [Member] | Total [ Member]
Grade:
Loan and leases receivable	28,573	26,371
Special Mention [Member] | Agriculture Portfolio Segment [Member]
Grade:
Loan and leases receivable	404
Special Mention [Member] | Consumer Portfolio Segment [Member]
Grade:
Loan and leases receivable	37	264
Special Mention [Member] | Total [ Member]
Grade:
Loan and leases receivable	14,687	12,272
Substandard [Member] | Finance Leases Portfolio Segment [Member]
Grade:
Loan and leases receivable	4	17
Substandard [Member] | Agriculture Portfolio Segment [Member]
Grade:
Loan and leases receivable	389	597
Substandard [Member] | Consumer Portfolio Segment [Member]
Grade:
Loan and leases receivable	411	799
Substandard [Member] | Total [ Member]
Grade:
Loan and leases receivable	15,003	20,431
Doubtful [Member] | Total [ Member]
Grade:
Loan and leases receivable	702	873
Total [ Member] | Finance Leases Portfolio Segment [Member]
Grade:
Loan and leases receivable	1,886	1,725
Total [ Member] | Agriculture Portfolio Segment [Member]
Grade:
Loan and leases receivable	3,675	4,583
Total [ Member] | Consumer Portfolio Segment [Member]
Grade:
Loan and leases receivable	8,956	10,984
Total [ Member] | Total [ Member]
Grade:
Loan and leases receivable	$ 276,343	$ 301,074