Loans (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
The activity in the allowance for loan losses
Activity in the allowance for loan losses, beginning balance	$ 9,048	$ 10,876	$ 9,820	$ 9,307
Provision for loan losses	325	700	725	3,650
Loans charged off	(938)	(830)	(2,574)	(3,124)
Recoveries	190	238	654	1,151
Activity in the allowance for loan losses, ending balance	8,625	10,984	8,625	10,984
Commercial Real Estate [Member]
The activity in the allowance for loan losses
Activity in the allowance for loan losses, beginning balance	4,626	6,053	4,880	5,780
Provision for loan losses	(142)	13	(87)	918
Loans charged off	(446)	(296)	(814)	(936)
Recoveries	23	3	82	11
Activity in the allowance for loan losses, ending balance	4,061	5,773	4,061	5,773
Commercial [Member]
The activity in the allowance for loan losses
Activity in the allowance for loan losses, beginning balance	1,752	1,886	1,529	1,707
Provision for loan losses	205	79	610	413
Loans charged off	(187)	(32)	(400)	(221)
Recoveries	9	2	40	36
Activity in the allowance for loan losses, ending balance	1,779	1,935	1,779	1,935
Residential Real Estate [Member]
The activity in the allowance for loan losses
Activity in the allowance for loan losses, beginning balance	1,607	1,542	1,802	881
Provision for loan losses	33	263	414	1,417
Loans charged off	(49)	(190)	(657)	(1,086)
Recoveries	21	7	53	410
Activity in the allowance for loan losses, ending balance	1,612	1,622	1,612	1,622
Consumer [Member]
The activity in the allowance for loan losses
Activity in the allowance for loan losses, beginning balance	1,020	1,123	972	875
Provision for loan losses	99	38	252	387
Loans charged off	(256)	(312)	(703)	(881)
Recoveries	137	226	479	694
Activity in the allowance for loan losses, ending balance	1,000	1,075	1,000	1,075
Unallocated [Member]
The activity in the allowance for loan losses
Activity in the allowance for loan losses, beginning balance	43	272	637	64
Provision for loan losses	130	307	(464)	515
Loans charged off	0		0
Recoveries	0		0
Activity in the allowance for loan losses, ending balance	$ 173	$ 579	$ 173	$ 579

A valuation allowance for financing receivables that are expected to be uncollectible.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(4)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

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- Definition

The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 168, 169, 170

-IssueDate 2006-05-01

-Chapter 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.11)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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