LOANS, Non-accrual and Past Due Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	$ 8,952		$ 8,952		$ 8,710
Age analysis of past due loans [Abstract]
30-59 Days Past Due	2,638		2,638		2,136
60-89 Days Past Due	1,166		1,166		3,544
90 Days or more Past Due	5,074		5,074		2,249
Total Past Due	8,878		8,878		7,929
Current	444,969		444,969		435,070
Total	453,847		453,847		442,999
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	17,653		17,653		20,865
Recorded Investment with no Allowance	8,829		8,829		11,820
Recorded Investment with Allowance	6,491		6,491		6,406
Total Recorded Investment	15,320		15,320		18,226
Related Allowance	1,317		1,317		1,648
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	15,713	21,875	16,377	21,141
Interest Income Recognized	86	221	253	697
Commercial [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	2,916		2,916		2,905
Number of loans impaired by classification	11		11		12
Age analysis of past due loans [Abstract]
30-59 Days Past Due	859		859		1,051
60-89 Days Past Due	859		859		166
90 Days or more Past Due	148		148		113
Total Past Due	1,866		1,866		1,330
Current	92,022		92,022		90,584
Total	93,888		93,888		91,914
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	3,944		3,944		4,694
Recorded Investment with no Allowance	2,793		2,793		2,919
Recorded Investment with Allowance	811		811		569
Total Recorded Investment	3,604		3,604		3,488
Related Allowance	152		152		101
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	3,713	3,619	3,689	3,242
Interest Income Recognized	8	62	28	102
Commercial Real Estate [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	3,628		3,628		3,071
Number of loans impaired by classification	6		6		6
Age analysis of past due loans [Abstract]
30-59 Days Past Due	1,067		1,067		0
60-89 Days Past Due	0		0		2,746
90 Days or more Past Due	3,481		3,481		446
Total Past Due	4,548		4,548		3,192
Current	188,202		188,202		172,601
Total	192,750		192,750		175,793
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	5,439		5,439		4,856
Recorded Investment with no Allowance	3,628		3,628		3,071
Recorded Investment with Allowance	1,172		1,172		1,198
Total Recorded Investment	4,800		4,800		4,269
Related Allowance	19		19		22
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	5,019	9,880	4,745	8,455
Interest Income Recognized	23	78	68	378
Agriculture [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	0		0		992
Number of loans impaired by classification					1
Age analysis of past due loans [Abstract]
30-59 Days Past Due	0		0		0
60-89 Days Past Due	0		0		0
90 Days or more Past Due	0		0		991
Total Past Due	0		0		991
Current	49,103		49,103		51,073
Total	49,103		49,103		52,064
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	0		0		3,847
Recorded Investment with no Allowance	0		0		3,598
Recorded Investment with Allowance	0		0		0
Total Recorded Investment	0		0		3,598
Related Allowance	0		0		0
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	449	1,062	1,517	1,597
Interest Income Recognized	0	2	0	6
Residential Mortgage [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	2,136		2,136		1,334
Number of loans impaired by classification	7		7		4
Age analysis of past due loans [Abstract]
30-59 Days Past Due	602		602		792
60-89 Days Past Due	136		136		420
90 Days or more Past Due	1,276		1,276		426
Total Past Due	2,014		2,014		1,638
Current	47,638		47,638		49,948
Total	49,652		49,652		51,586
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	5,912		5,912		5,336
Recorded Investment with no Allowance	2,136		2,136		1,875
Recorded Investment with Allowance	2,769		2,769		3,194
Total Recorded Investment	4,905		4,905		5,069
Related Allowance	497		497		731
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	4,446	5,455	4,374	5,834
Interest Income Recognized	39	64	98	152
Residential Construction [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	42		42		48
Number of loans impaired by classification	1		1		1
Age analysis of past due loans [Abstract]
30-59 Days Past Due	109		109		273
60-89 Days Past Due	0		0		0
90 Days or more Past Due	42		42		48
Total Past Due	151		151		321
Current	7,431		7,431		7,171
Total	7,582		7,582		7,492
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	1,360		1,360		1,147
Recorded Investment with no Allowance	42		42		48
Recorded Investment with Allowance	1,105		1,105		1,099
Total Recorded Investment	1,147		1,147		1,147
Related Allowance	563		563		668
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	1,137	1,416	1,178	1,611
Interest Income Recognized	12	14	38	54
Consumer [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	230		230		360
Number of loans impaired by classification	5		5		5
Age analysis of past due loans [Abstract]
30-59 Days Past Due	1		1		20
60-89 Days Past Due	171		171		212
90 Days or more Past Due	127		127		225
Total Past Due	299		299		457
Current	60,573		60,573		63,693
Total	60,872		60,872		64,150
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	998		998		985
Recorded Investment with no Allowance	230		230		309
Recorded Investment with Allowance	634		634		346
Total Recorded Investment	864		864		655
Related Allowance	86		86		126
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	949	446	874	402
Interest Income Recognized	$ 4	$ 1	$ 21	$ 5